Security & low voltage interview questions

Residential installs are growing, but monthly cancellations are rising and eating most of the new recurring revenue. What do you do?

Situational · Fixing cancellations

Strong answer

Finds out why customers leave, by reason and sales channel, fixes service and onboarding problems, reviews sales practices and measures retention monthly.

Red flags

Pushes sales harder to outrun the losses.

A camera system your company installed was hacked, and the customer's footage was posted online. A reporter calls. What do you do?

Situational · Leading through a security incident

Strong answer

Takes care of the customer first, gets experts to investigate, fixes the cause, gives an honest statement with counsel, and reviews standards on every install.

Red flags

Denies responsibility or stays silent.

Walk me through how you'd keep a security company compliant with the licenses and rules it operates under.

Technical · Licensing and consumer rules

Strong answer

Covers state and local alarm, fire alarm and low voltage licenses for the company and technicians, background checks where the state requires them, false alarm permits, cooling-off rules for home sales, and an owner for each.

Red flags

Assumes the office handles it.

Tell me about a time you moved a company into a new line of work, like commercial access control or managed video. How did you decide?

Behavioral · Entering new lines of business

Strong answer

Tested demand and margins, built the skills before selling big, and measured results.

Red flags

Jumped in because a competitor did.

Tell me about a time you let go of a leader whose team hit install numbers by cutting corners, like skipping tests or leaving default passwords.

Behavioral · Holding leaders to install standards

Strong answer

Explains the harm with evidence, such as callbacks or a security issue, the coaching tried first, and how they handled the exit and reset the standard with the team.

Red flags

Kept them because of the numbers, or fired them without first making the standard clear.

Tell me about a time you changed a sales practice because customers were signing monitoring contracts they didn't understand.

Behavioral · Integrity in selling

Strong answer

Names the practice, such as unclear contract length or auto-renewal terms, what they changed, like plain-language summaries or a call before install, and the cost they accepted.

Red flags

Can't name a cost they accepted, or defends tactics like pressure sales at the door or contract terms customers don't notice.

Callbacks on new installs doubled after you added [four] new technicians. What do you do?

Situational · Fixing install quality

Strong answer

Looks at callbacks by tech and job type, rides along, finds the training gap, pairs new techs with leads and adds a quality check before sign-off.

Red flags

Blames the new hires and keeps the same onboarding.

A technician admits saving customer alarm codes and network passwords in a personal phone's notes app. What do you do?

Situational · Protecting customer data

Strong answer

Gets the data deleted, checks whether anything was exposed, requires a company password tool, retrains everyone and decides with counsel whether customers must be told.

Red flags

Gives a warning and moves on.

Walk me through the standard steps you'd require from signed contract to customer sign-off on a commercial access control job.

Technical · Standard install process

Strong answer

Survey and design review, device schedule, ordering, door hardware and life-safety review, rough-in, testing, programming access levels, fire alarm release test, training, as-builts and sign-off.

Red flags

Lets each crew do it their own way.

Tell me about a time you took on more commercial work than your manufacturer-certified technicians could cover. What broke first?

Behavioral · Scaling field operations

Strong answer

Honest about what broke, such as programming backlogs or uncertified techs on jobs, explains the fix, like certification plans or vetted subcontractors, and what they'd do earlier.

Red flags

Claims nothing broke, or sent uncertified techs and hoped.

Tell me about a time technicians resisted a new required step, like testing every zone with the monitoring center before leaving a job. How did you win them over?

Behavioral · Winning buy-in for new procedures

Strong answer

Explained why with real false-alarm or callback data, involved respected techs, made the step quick, and checked it was used.

Red flags

Forced it through and stopped checking, or dropped it when techs complained.

Tell me about a time you rolled out a new tool for technicians, like remote panel programming or a field app tied to monitoring accounts. What went wrong at first?

Behavioral · Adopting new tools

Strong answer

Describes rollout problems candidly, how they fixed them and what adoption looked like afterward.

Red flags

Bought software and blamed staff when it wasn't used.

Walk me through how you'd measure whether adding a new monitored customer actually creates value.

Technical · Recurring revenue economics

Strong answer

Compares the cost to create the account, including equipment, install labor and commission, with monthly margin and expected life after cancellations, and compares payback by sales channel.

Red flags

Counts any new account as a win.

Sales says cancellations are fine, but you see more accounts canceling in their first year than before. How would you dig in?

Situational · Spotting early cancellations

Strong answer

Groups accounts by start month, channel and rep, looks at cancellation reasons and contract terms, and shows leadership the cost.

Red flags

Looks only at the total cancellation rate.

A commercial camera and access control project is [40] days past due, and the general contractor says the owner hasn't paid them. What do you do?

Situational · Protecting cash on commercial jobs

Strong answer

Reviews the contract and lien deadlines, sends required notices on time, works with the project manager on collection and plans for the cash gap.

Red flags

Waits for the contractor to get paid.

Tell me about a budget you built that split install, service and monitoring so managers could act on it.

Behavioral · Useful budgets

Strong answer

Built it with the managers by line of business, kept it simple, tracked recurring revenue and install margin separately, and reviewed it with them monthly.

Red flags

Built one company-wide budget alone that nobody looked at.

Tell me about a time you caught a risk in how commercial projects were bid or billed before it hurt cash.

Behavioral · Early risk detection

Strong answer

Names the early signal, such as underbilling on long projects or growing retainage, what they changed, like progress billing rules or bid reviews, and the result.

Red flags

Found it after the damage was done, or only watched the bank balance.

Tell me about a time you prepared a company with monitoring contracts for a lender review, sale or investor.

Behavioral · Preparing for lenders or buyers

Strong answer

Knows they look hard at recurring revenue quality, cancellations, contract terms and clean books, and describes cleaning up account data before the review.

Red flags

Just handed over financial statements, or couldn't tie recurring revenue to signed contracts.

A large commercial project is behind, and the residential service backlog is growing. Both depend on the same technicians. What do you do?

Situational · Balancing projects and service

Strong answer

Weighs contract penalties against cancellations from slow service, protects urgent service, adds subcontractors or overtime and tells both groups of customers the truth.

Red flags

Lets service slide because the project is bigger.

Sales wants to bid a large school access control project at a thin margin to win the service contract later. What do you decide?

Situational · Bidding for future service

Strong answer

Looks at total value and risks such as bonding and wage rules, sets a margin floor, and requires written service terms instead of a promise.

Red flags

Bids low on hope.

Walk me through how you'd read the monthly recurring revenue report to judge whether this business is getting healthier.

Technical · Reading recurring revenue

Strong answer

Looks at recurring revenue added versus lost, cancellations by reason, channel and account age, accounts monitored but not billed, past-due monitoring accounts, and how many installs add a monitoring or service plan.

Red flags

Looks only at install sales or the total recurring number without seeing what was lost.

Tell me about someone you developed to run the service side, including monitored accounts and cancellations. What did you do?

Behavioral · Developing managers

Strong answer

Gave real responsibility, like owning service response and cancellation saves, coached through mistakes and set clear goals.

Red flags

Can't name anyone they developed, or promoted a top technician and left them to figure out managing alone.

Tell me about a time you stopped offering a type of security work, like low-margin residential installs or a product you couldn't support. Why did you do it?

Behavioral · Choosing which work to do

Strong answer

Explains the data and tradeoff behind the call and how they took care of existing customers on that work.

Red flags

Has never said no to work.

Tell me about a time you made a losing service department profitable, such as one giving away free trips on monitored accounts.

Behavioral · Turning around profit

Strong answer

Found the real cause in the numbers, like unbilled trips or weak service plans, acted on the biggest lever, and tracked results without hurting retention.

Red flags

Cut costs at random, or raised prices without watching cancellations.

Walk me through what you check before a commercial camera and access control install is turned over to the customer.

Technical · Final quality check

Strong answer

Every device works per the device schedule, cables are tested and labeled, doors lock, unlock and allow free exit, fire alarm release works, cameras record and default passwords are changed.

Red flags

Checks that cameras show a picture and calls it done.

You find a technician installed a mag lock on an exit door with no exit device and no fire alarm release. The customer wants it live today. What do you do?

Situational · Protecting free exit

Strong answer

Won't make it live until free exit and the release are in place to code, explains why to the customer, gets it fixed and documents it.

Red flags

Turns it on and plans to fix it later.

A cabling subcontractor left loose bundles, no labels and runs lying on the ceiling tiles. What do you do?

Situational · Holding subcontractors to standard

Strong answer

Documents it, holds payment approval per the contract, requires properly supported, labeled cable, tells the project manager and checks the rework.

Red flags

Has our own techs fix it quietly.

Tell me about a safety briefing you led on a hazard your crews face, like ladders above drop ceilings or work in hot attics. What changed afterward?

Behavioral · Effective safety briefings

Strong answer

Names a specific hazard, how they explained it and what the crew did differently after.

Red flags

Read a sheet aloud with no change.

Tell me about a time a customer was unhappy with an install you oversaw, like camera views that missed what they needed. How did you turn it around?

Behavioral · Turning around unhappy customers

Strong answer

Listened, checked the views or devices against what was promised, owned the problem, fixed it fast and checked back.

Red flags

Defended the crew without listening, or argued over what the proposal said.

Tell me about a technician you coached to stop leaving messy racks, loose cables or missing labels.

Behavioral · Coaching technicians

Strong answer

Showed specific examples, demonstrated the right way, set a photo standard, and checked their next jobs.

Red flags

Fixed the work themselves without telling the technician.

Your state requires alarm technicians to hold a license with a background check, and a strong candidate's license is still pending. What do you do?

Situational · Hiring within licensing rules

Strong answer

Checks what work state rules allow while it's pending, follows FCRA and fair-chance rules on any background check the company runs, gets advice where unclear, and keeps them out of licensed work until approved.

Red flags

Puts them to work anyway, or rejects them without checking the rules.

A customer reports that a technician made inappropriate comments in their home. What do you do?

Situational · Complaints about conduct in homes

Strong answer

Takes it seriously, documents it, keeps the tech off that account while investigating, interviews both sides, acts on the findings and follows up with the customer.

Red flags

Asks the tech for their side and closes it.

Walk me through how you'd track technician licenses, manufacturer certifications and safety training so dispatch only sends qualified people.

Technical · Tracking qualifications

Strong answer

Keeps every credential with expiration dates in one system, alerts ahead of renewals, verifies originals and gives dispatch a current skills list by platform.

Red flags

Checks credentials only at hire.

Tell me about a time you had to staff up quickly for a big commercial project without lowering the bar. What did you do?

Behavioral · Fast hiring without lowering the bar

Strong answer

Kept structured interviews and work samples, sped up scheduling and checked early results of the hires.

Red flags

Dropped steps and hired whoever applied.

Tell me about a time you helped a manager handle a technician whose installs kept causing callbacks or failing inspection.

Behavioral · Fair performance management

Strong answer

Tied the standard to callback or inspection records, set up documented coaching and retraining, gave a fair timeline, matched how others were treated, and decided on results.

Red flags

Let the manager skip coaching and fire out of frustration, or ignored it because the tech was fast.

Tell me about a change you made that kept certified technicians from leaving for larger integrators.

Behavioral · Keeping certified technicians

Strong answer

Asked techs what mattered, such as certification paths, tools or schedules, made a specific change, and tracked turnover.

Red flags

Planned events without asking employees, or only reacted one resignation at a time.

The owner wants a campaign built around recent break-ins in local neighborhoods. How would you handle it?

Situational · Marketing without fear tactics

Strong answer

Avoids exploiting fear or unverified crime claims, protects victims' privacy, and uses accurate, helpful prevention content instead.

Red flags

Uses scary headlines and specific victims' homes.

We want to grow commercial access control and video, but most leads today are residential. What would you change in the first [90] days?

Situational · Growing commercial leads

Strong answer

Builds a target list of businesses and property managers, creates case studies and landing pages, uses business channels and events, and measures meetings booked.

Red flags

Runs the same residential ads with a new headline.

Walk me through how you'd measure marketing's return when most of a customer's value comes from monthly monitoring over several years.

Technical · Measuring long-term value

Strong answer

Tracks cost per new account by channel, uses expected customer life and cancellations with finance, and reports payback, not just leads.

Red flags

Reports cost per lead only.

Tell me about a test you ran on an offer, like free equipment with a monitoring contract versus a lower monthly price.

Behavioral · Testing offers

Strong answer

Set up a fair test, measured cost per new account and early cancellations, not just sign-ups, and moved budget based on it.

Red flags

Changed spend on gut feel, or judged it by sign-ups alone.

Tell me how you've earned honest online reviews at the right moments, like right after a clean install or a fast service fix.

Behavioral · Honest reviews

Strong answer

Asked happy customers at the right moment, made it easy, responded to every review and never paid for positive ones.

Red flags

Offered rewards for five-star reviews or wrote fake ones.

Tell me about a time you built a campaign with sales to win back canceled monitoring customers.

Behavioral · Win-back campaigns with sales

Strong answer

Set clear roles, built the list from cancellation reasons, used a message that addressed why they left, and set a follow-up process sales actually used.

Red flags

Handed over a list with no plan, or ignored why customers canceled.

Walk me through how you'd make sure every finished service call and install gets billed correctly and quickly.

Technical · Billing every job

Strong answer

Reviews closed work orders daily, checks them against service plans and contracts, confirms photos and signatures, invoices fast and works an exceptions list.

Red flags

Bills when someone remembers.

A customer asks to cancel monitoring, but their contract runs [ten] more months. What do you do?

Situational · Handling early cancellations

Strong answer

Logs it, follows the contract and state rules, routes it to the right person, replies politely in writing and coordinates timing with the central station.

Red flags

Ignores the request or argues with the customer.

You find that a former employee still has access to the system where customer alarm codes are stored. What do you do?

Situational · Securing customer information

Strong answer

Removes access right away, changes shared logins, checks activity logs, tells the manager and fixes the offboarding checklist.

Red flags

Plans to deal with it later.

Tell me about a time you cleaned up customer account records, like out-of-date call lists or emergency contacts.

Behavioral · Cleaning up account records

Strong answer

Describes the mess, how they verified details with customers, kept the data secure, and a result like fewer failed verifications or billing errors.

Red flags

Can't describe the mess, changed records without verifying the customer, or set up a system the team stopped using.

Tell me about a time you pushed back when a manager asked you to bend a rule, like changing an account without verifying the caller.

Behavioral · Managing up

Strong answer

Explained the risk, offered a fast proper way, and let the manager decide with full information.

Red flags

Quietly did it, or refused without explaining why.

Tell me about a time you fixed how technicians reported finished work so the office could bill it and confirm the account was off test.

Behavioral · Field and office communication

Strong answer

Found the main gap, set a simple close-out step in the field app, and checked it worked.

Red flags

Asked everyone to communicate better.

Next week has [12] installs and [30] service calls across alarms, cameras and access control, and only [two] techs know the main access platform. How do you plan it?

Situational · Scheduling around skills

Strong answer

Maps jobs to skills, protects the access control work for those two, pairs others with them to cross-train and tells customers realistic dates.

Red flags

Assigns by location only.

Cameras for [three] booked installs are back-ordered, and the customers have taken time off work. What do you do?

Situational · Handling back orders

Strong answer

Calls customers early with options, uses approved substitutes only with their OK, reschedules and fills the techs' time with other work.

Red flags

Lets crews show up without the cameras.

Walk me through how you'd measure and cut return trips on installs caused by things like missing parts, weak surveys or unfinished programming.

Technical · First-visit completion

Strong answer

Tracks return trips by cause, tech and job type, then fixes the step upstream: survey checklists, kitting from the device schedule, programming panels before the crew rolls, and realistic job lengths.

Red flags

Tells techs to finish the first time without finding why they keep going back.

Tell me about a technician who kept running over on commercial jobs because of programming or troubleshooting time. How did you help them improve?

Behavioral · Coaching on job time

Strong answer

Looked at where time went, rode along, coached specific steps and tracked improvement.

Red flags

Shortened their schedule and hoped.

Tell me about a report you built that changed a leadership decision, like which platforms to keep selling.

Behavioral · Reporting for decisions

Strong answer

Pulled data such as service calls, callbacks, programming hours and margin by platform, laid it out plainly, and leadership changed course, such as dropping a panel line or paying for more certification training.

Red flags

Made reports nobody acted on.

Tell me about a recurring bottleneck you removed, like jobs waiting on door hardware or permits. How did you find it?

Behavioral · Removing bottlenecks

Strong answer

Watched the work or the data, found the true cause and fixed it.

Red flags

Added people without finding the cause.

Walk me through the code and quality checks you'd expect on a residential low-voltage install, from rough-in to finish.

Technical · Code and quality on residential installs

Strong answer

Separation from power wiring, correctly rated cable, firestopping or fireblocking with approved materials where cable passes through rated walls, floors or top plates, supported cable, low-voltage brackets, labeling, testing and a clean finish.

Red flags

Checks only that the system works.

You find a crew did [five] installs in a town that requires a low-voltage permit, and nobody pulled one. What do you do?

Situational · Fixing permit gaps

Strong answer

Tells leadership, pulls the permits per the town's process, schedules inspections, and adds a permit check to job setup.

Red flags

Hopes the town never notices.

Leadership wants [20] more installs a month with the same crews. How do you respond?

Situational · Growing output responsibly

Strong answer

Measures current capacity, finds waste like drive time or poor staging, proposes a plan with what's needed and protects quality checks.

Red flags

Agrees and pushes crews harder.

Tell me about a quality check you built for installs, such as photo proof of labels, zone tests and signal checks. What did it catch?

Behavioral · Building quality checks

Strong answer

Required photos or a checklist before closeout, reviewed them before billing, and names problems it caught, such as zones that never reported to the central station, unlabeled cables or a camera left on its default password.

Red flags

Relied on customers to report problems.

Tell me about a time a crew lead started skipping steps, like firestopping penetrations or pulling permits, to finish more installs. What did you do?

Behavioral · Holding crew leads accountable

Strong answer

Talked privately with evidence, found the cause and set a plan with follow-up.

Red flags

Avoided it because the lead was well liked.

Tell me about a time you had to choose between hitting a go-live date and fixing a quality problem, like a camera that kept dropping offline. What did you decide?

Behavioral · Quality over the schedule

Strong answer

Fixed the quality problem, told the customer early, reset the date and explains the cost they accepted.

Red flags

Hit the date and planned to fix it later, or hid the problem.

Walk me through how you build a device schedule from floor plans and a door hardware schedule.

Technical · Building a device schedule

Strong answer

Lists every reader, camera, sensor and data drop with location, cable type, panel or switch, power, door hardware and programming notes, then reviews it with the lead tech.

Red flags

Works from the floor plan without a schedule.

Walk me through how you get a fire alarm system from plan submittal to AHJ acceptance.

Technical · Fire alarm acceptance

Strong answer

Gets drawings and calculations from a qualified designer, answers AHJ comments, pre-tests every device, checks interfaces with elevators, sprinklers and HVAC, books the acceptance test and completes the record of completion.

Red flags

Lets the inspector be the first full test.

Two days before go-live, you learn [six] doors got standard strikes instead of electrified ones because the hardware supplier never got your spec. What do you do?

Situational · Recovering from hardware mix-ups

Strong answer

Tells the customer and general contractor right away, sets a temporary plan, expedites hardware, phases go-live and fixes the spec handoff.

Red flags

Goes live and works around it without telling anyone.

The facility manager asks your technicians to add [eight] cameras during the job and says to bill it later. What do you do?

Situational · Change orders before work

Strong answer

Prices it and gets a signed change order before techs install them, then updates the schedule and device list.

Red flags

Lets techs install them on a verbal OK.

Tell me about a job where you had to hand over admin passwords, programming backups and system access to the customer. How did you do it securely?

Behavioral · Secure system handover

Strong answer

Changed every default password, delivered as-builts, test results and programming backups, gave credentials only to the owner's named contact through a secure method, and recorded who got what.

Red flags

Emailed passwords in plain text, kept shared logins, or left defaults in place.

Tell me about a cutover or go-live you planned that had to happen without disrupting the customer. How did it go?

Behavioral · Planning cutovers

Strong answer

Planned timing and rollback, staged and tested ahead, communicated clearly and can say what they'd improve.

Red flags

Winged it and dealt with problems as they came.

A door-to-door team is posting record sales, but early cancellations and complaints are spiking. What do you do?

Situational · Cleaning up bad sales practices

Strong answer

Calls customers to learn what was said, checks required cancellation disclosures, removes or retrains bad actors and ties pay to customers who stay.

Red flags

Celebrates the numbers and ignores the complaints.

A rep keeps selling camera systems without site surveys, and installs keep needing change orders. What do you do?

Situational · Stopping sales without surveys

Strong answer

Requires a survey checklist before approval, rides along, coaches the rep and tracks change orders by rep.

Red flags

Lets operations absorb it.

Walk me through how you'd design a commission plan that rewards both new recurring revenue and customers who stay.

Technical · Designing commission plans

Strong answer

Pays on recurring revenue and install margin, claws back on early cancellations, includes quality measures and keeps it simple enough to explain.

Red flags

Pays on signed contracts only.

Tell me about a rep you turned around who kept losing deals after the site survey. What specifically did you work on?

Behavioral · Turning reps around

Strong answer

Found the exact weak step in their sales process, practiced it and tracked improvement.

Red flags

Gave general encouragement.

Tell me how you've checked whether a sales candidate will be honest about contract length, monthly cost and cancellation rights before you hired them.

Behavioral · Hiring for honest selling

Strong answer

Ran a scored role-play where the customer asks about term, price and cancelling, rewarded clear, honest answers, and checked references for complaints or early cancellations.

Red flags

Hires on energy and close rate alone, or sees hard-sell answers as a plus.

Tell me about a large commercial deal, like a multi-site access control job, that you helped your team close. What was your role?

Behavioral · Closing big deals as a team

Strong answer

Supported the rep without taking over, brought in the right people and handled a key obstacle.

Red flags

Took the deal over from the rep.

Walk me through how you'd kit and stage equipment for commercial installs so technicians leave with everything for the day.

Technical · Kitting jobs

Strong answer

Builds pick lists from the device schedule, scans serials, labels by job, has a second person check, stages the night before and flags shortages to the project manager.

Red flags

Lets techs pull their own material in the morning.

Walk me through how you'd decide what to keep in stock versus order for each job.

Technical · Stock or order per job

Strong answer

Weighs how often items are used, lead time, cost, how many jobs share them and the risk of models going obsolete.

Red flags

Stocks everything, or nothing.

Your counts show high-value cameras going missing over several months. What do you do?

Situational · Investigating shrinkage

Strong answer

Secures high-value stock, tracks serials and checkouts, increases counts, reviews with management and HR, and doesn't accuse without evidence.

Red flags

Accuses someone on a hunch.

Used equipment from removals piles up untested in a corner. How would you handle it?

Situational · Handling used equipment

Strong answer

Tests and grades it, wipes customer data with a factory reset, returns or recycles it properly and tracks it.

Red flags

Reuses it on new jobs without testing or resetting.

Tell me about a change that cut the time techs spent picking up equipment, like pre-built camera or panel kits. How did you measure it?

Behavioral · Speeding up material flow

Strong answer

Built standard kits for common jobs, such as a camera install or a panel swap, timed pickups or counted return trips before and after, and shows the drop.

Red flags

Can't say how long techs waited or how many return trips happened before and after, or the change just moved work onto techs.

Tell me about a time you had to hold a warehouse employee accountable for kitting errors that sent techs out short.

Behavioral · Holding staff accountable

Strong answer

Clear expectations, private conversation with facts, a plan and follow-up.

Red flags

Avoided it or blew up.

A caller says they own the account and asks you to change the alarm passcode and remove a name from the call list. They can't remember the passcode. What do you do?

Situational · Verifying identity

Strong answer

Follows the verification policy, won't change anything until identity is confirmed, offers another approved way to verify and notes the attempt.

Red flags

Makes the change because the caller sounds genuine.

A business owner says their alarm went off [three] nights in a row and the police are warning about fines. What do you do?

Situational · Repeated false alarms

Strong answer

Gets the zones and times, checks the event history, books priority service, follows policy on any temporary steps and documents it.

Red flags

Tells them to turn the alarm off.

A new customer booking a camera install asks if the cameras can record audio too. What do you tell them?

Situational · Questions about audio recording

Strong answer

Says audio recording rules vary by state and may require consent, and passes the question to sales or a technician instead of promising.

Red flags

Says yes, no problem.

A homeowner's app shows one camera offline. Walk me through the questions and simple checks you'd go through before booking a visit.

Technical · Phone troubleshooting

Strong answer

Asks when it started, whether power or the router changed and whether other cameras work, walks through approved restart steps, then books a visit if needed.

Red flags

Books a visit without asking anything.

Tell me about a time a customer wanted to cancel and you found a way to keep them, or helped them leave on good terms.

Behavioral · Saving cancellations

Strong answer

Found the real reason, solved it if possible and was respectful either way.

Red flags

Argued, or made leaving hard.

Tell me about a time you handled a call from someone who was scared or upset, such as a customer whose home had just been broken into. How did you help them?

Behavioral · Calming frightened callers

Strong answer

Stayed calm, made sure they were safe and had called police if needed, gave clear next steps, such as a service visit or an account check, and followed through.

Red flags

Rushed them off the phone, or never checked that they were safe.

You have a store whose front door won't lock, a fire alarm panel in trouble at an office, a home with one camera offline and [two] installs. You have [three] technicians. Walk me through your plan.

Situational · Prioritizing service calls

Strong answer

Sends qualified techs to the fire alarm and the unsecured door first, adjusts installs, puts the camera call later, and calls each customer with an honest time.

Red flags

Takes calls in the order received.

A technician arrives at a commercial access control call and says they've never worked on that platform. What do you do?

Situational · Matching platform skills

Strong answer

Finds a certified tech to swap in or support by phone, updates the customer honestly and notes the skill gap for future dispatch.

Red flags

Tells the tech to figure it out.

At [11 p.m.], a monitored business calls because their alarm won't arm and the owner wants someone now. The on-call tech has a long drive. What do you do?

Situational · After-hours requests

Strong answer

Checks what remote help can fix, explains options and after-hours charges per policy, dispatches if needed and gives an honest time.

Red flags

Promises a fast arrival without checking.

Walk me through the information you'd make sure a technician has before heading to a commercial service call.

Technical · Preparing technicians

Strong answer

Site contact and access hours, equipment and platform, monitoring account and whether it must go on test, call history, likely parts and site safety rules.

Red flags

Just the address.

Tell me about a day you had to rework the whole schedule by mid-morning. What did you do first?

Behavioral · Reworking the schedule

Strong answer

Took stock, ranked by urgency, called affected customers early and kept techs informed.

Red flags

Patched it one call at a time with no plan.

Tell me about a time you had to tell a customer with an urgent problem, like a door that wouldn't lock, that no one could come until the next day.

Behavioral · Delivering bad news on urgent calls

Strong answer

Called early, explained honestly, offered what the company allows in the meantime, such as remote help or a workaround, confirmed the first slot and followed up.

Red flags

Promised a time they couldn't keep, or let the customer find out when no one showed.

Walk me through how you'd manage monthly monitoring billing for thousands of accounts, including failed card payments.

Technical · Recurring monitoring billing

Strong answer

Uses recurring billing with auto-pay, a retry and notice process for failed cards, processes cancellations per contract, defers prepaid annual billing and reconciles billing to the active account list.

Red flags

Lets failed cards sit with no follow-up, keeps billing canceled accounts, or books prepaid annual monitoring as earned the day it's paid.

Walk me through how you'd code costs on a commercial access control job so the project manager can see whether it made money.

Technical · Job costing commercial installs

Strong answer

Codes materials, labor hours, subcontractors and change orders to the job number, compares them with the estimate and reports progress billing against cost.

Red flags

Puts job costs into general expense accounts.

The recurring revenue report shows [1,200] monitored accounts, but billing shows [1,150] active. What do you do?

Situational · Reconciling recurring revenue

Strong answer

Matches the two lists, finds accounts monitored but not billed and billed but canceled, fixes them with operations and reports the revenue impact.

Red flags

Assumes one report is right and moves on.

The central station's invoice charges for [40] more accounts than you have. What do you do?

Situational · Checking vendor invoices

Strong answer

Compares their account list with ours, disputes the extras with support, confirms canceled accounts were removed and fixes the cancellation process.

Red flags

Pays it because the station knows best.

Tell me about a time you handled a big jump in transactions without letting errors in. How did you do it?

Behavioral · Accuracy at high volume

Strong answer

Used batching, checklists or automation and spot checks, and can show error rates held.

Red flags

Worked faster and hoped for the best.

Tell me about a time you had to research a tax or compliance question you didn't know the answer to. How did you get to the right answer?

Behavioral · Researching tax and compliance questions

Strong answer

Used official sources, confirmed with the CPA and documented the answer for next time.

Red flags

Guessed or copied what a past bookkeeper did.

Panels, cameras and readers have serial numbers tied to customer accounts and warranties. Walk me through how you'd track them from receiving to install.

Technical · Tracking serialized equipment

Strong answer

Scans serials on receipt, assigns them to a truck or job, records them on the customer account at install and tracks returns and warranty claims.

Red flags

Tracks quantities only.

A technician brings back [three] failed cameras from different jobs with no paperwork. What do you do?

Situational · Handling returns

Strong answer

Gets the job and customer details, checks warranty, starts manufacturer returns, tags and stores them and reminds the team of the return process.

Red flags

Throws them on a shelf.

The same reader model on your shelf comes in [two] hardware versions, and one doesn't work with the access platform you sell. What do you do?

Situational · Catching compatibility problems

Strong answer

Separates and labels them, tells technicians and operations, checks with the manufacturer and orders only the compatible version.

Red flags

Leaves them mixed together.

Technicians take spools of cable without logging them, so job costs are wrong. How would you fix it?

Situational · Tracking bulk materials

Strong answer

Sets up a quick checkout tied to job numbers, measures what comes back, and explains to techs why it matters.

Red flags

Locks everything up so jobs get delayed.

Tell me about a time you set reorder points that prevented shortages. How did you choose them?

Behavioral · Setting reorder points

Strong answer

Used usage history and lead times, adjusted for busy seasons and checked results.

Red flags

Guessed and adjusted only after stock-outs.

Tell me about a time you had to tell a project team that panels, cameras or door hardware wouldn't arrive on time. How did you handle it?

Behavioral · Communicating delays

Strong answer

Told them as soon as they knew, offered options like a substitute model the customer approved or a partial shipment, and kept them updated until it arrived.

Red flags

Waited until the crew asked, or let them find out on install day.

Walk me through how you'd assess a small office building's security needs before writing a proposal.

Technical · Security needs assessment

Strong answer

Walks the site, asks about past incidents, who needs access where and when, existing equipment and network, door hardware, camera goals by area, privacy limits and budget.

Red flags

Starts with a standard package and a price.

A business owner wants cameras that record audio in the break room and at the front desk. How do you respond?

Situational · Audio and privacy rules

Strong answer

Explains that audio recording laws vary by state and may require consent and notice, suggests checking with counsel, and keeps cameras out of private areas like restrooms.

Red flags

Sells it as asked.

A prospect has a cheaper quote using consumer cameras on the office Wi-Fi. How do you make your case?

Situational · Competing against cheap systems

Strong answer

Compares reliability, wired power and network security, support and total cost in plain terms, without trashing the competitor.

Red flags

Cuts the price to match.

Tell me about a commercial security deal you won where IT, facilities and the owner all had a say.

Behavioral · Selling to several decision makers

Strong answer

Learned each person's concern, such as network security for IT, doors and hardware for facilities and cost for the owner, answered each, and kept one plan moving.

Red flags

Sold only to one contact and got stalled or surprised by IT late in the deal.

Tell me about a time something you sold turned out to be wrong for the site. How did you fix it?

Behavioral · Fixing a wrong sale

Strong answer

Owned it with the customer and operations, fixed it fairly and changed how they survey.

Red flags

Blamed installers or the customer.

Tell me about a customer you grew from a small first job into a bigger account. What did you do?

Behavioral · Growing accounts

Strong answer

Delivered well on the first job, stayed in touch and found the next real need.

Red flags

Didn't follow up after the first sale.

You have [100] homeowners who got an alarm quote but never signed. Many said the monthly cost was the issue. How do you approach them?

Situational · Working unsigned quotes

Strong answer

Groups them by reason and age, offers honest options such as a smaller system or a different plan if we have one, and calls at sensible times without pressure.

Red flags

Repeats the same pitch to everyone.

A customer canceled monitoring when they moved. How would you approach the new owners of that home?

Situational · Reactivating homes with equipment

Strong answer

Reaches out politely within contact rules, offers to test and reactivate the existing equipment, gives clear pricing and respects a no.

Red flags

Implies the system is still under contract or required.

A prospect asks if there's a deal that ends today. There isn't. What do you say?

Situational · No false deadlines

Strong answer

Tells the truth, explains the real offer and gives them time to decide.

Red flags

Invents a deadline to close the sale.

Walk me through the rules you follow before calling or texting past leads, including do-not-call lists and consent for texts.

Technical · Outreach compliance

Strong answer

Scrubs against do-not-call and opt-out lists, texts only with consent, honors stop requests right away and logs everything.

Red flags

Calls the whole list without checking.

Tell me about a time you brought back a customer who left for a competitor. What did you say?

Behavioral · Winning back customers

Strong answer

Learned why they left, addressed it directly and gave them a reason to return.

Red flags

Offered the lowest price and nothing else.

Tell me how you organized a large list of old leads in a past job. What did you do first?

Behavioral · Organizing large lists

Strong answer

Cleaned and sorted the list by value and reason, set a cadence and tracked results.

Red flags

Started at the top and dialed.

You're pulling cable through a hot attic and can't see the joists well under the insulation. Your lead is waiting in the room below. What do you do?

Situational · Working safely in attics

Strong answer

Uses a light, steps only on joists, moves slowly, watches for nails and wiring, drinks water and tells the lead if it isn't safe.

Red flags

Rushes across and risks stepping through the ceiling.

While working in a customer's home office, you see their passwords on a sticky note by the computer. A coworker jokes about taking a picture. What do you do?

Situational · Respecting customer privacy

Strong answer

Tells the coworker no, doesn't touch or photograph anything, and mentions it to the lead.

Red flags

Laughs along or ignores it.

Your lead asks you to label both ends of [20] cable runs, but you aren't sure which room each run goes to. What do you do?

Situational · Labeling without guessing

Strong answer

Checks the plan, traces or tones the cables, or asks the lead, and labels both ends the same way.

Red flags

Guesses so the job looks finished.

Tell me about a time at work, school, or volunteering when you did hard, repetitive work for a long stretch. How did you keep the quality up?

Behavioral · Keeping quality on repetitive work

Strong answer

Gives a real example and a method, such as checking every tenth item or taking short resets, and the result.

Red flags

Admits quality slipped and saw no problem with it.

Tell me about a time at work, school, or volunteering when the instructions you got didn't match what you found in front of you. What did you do?

Behavioral · Checking instructions against the site

Strong answer

Stopped, asked specific questions, confirmed the right plan before going on, and checked in early.

Red flags

Guessed so they could keep working, then redid the work later or left it wrong.

Walk me through how you'd set up and climb a ladder to run cable above a drop ceiling.

Technical · Ladder safety

Strong answer

Inspects the ladder, picks the right height, opens and locks it fully, stays off the top steps, keeps three points of contact and carries tools in a pouch.

Red flags

Stands on the top step or leans far to one side.

Walk me through how you'd terminate a network cable on a jack and confirm it works.

Technical · Terminating network cable

Strong answer

Strips only what's needed, keeps the twists close to the termination, uses the same wiring standard as the other end, seats the wires cleanly, tests the wire map and labels it.

Red flags

Untwists long sections, mixes standards or skips the test.

A door contact on an alarm zone shows trouble. Walk me through how you'd use a meter to check the wiring.

Technical · Using a meter on alarm wiring

Strong answer

Puts the account on test, lifts the zone wires at the panel, measures loop resistance against the end-of-line resistor value, opens and closes the contact to watch it change, and looks for opens, shorts or a bad splice.

Red flags

Replaces the contact without testing anything.

While you install cameras, the homeowner asks you to add one more aimed at the neighbor's backyard. What do you do?

Situational · Handling extra requests on site

Strong answer

Politely explains extra work goes through the office, raises the concern about recording a neighbor's private space, and lets the lead handle it.

Red flags

Adds it for free to make the customer happy.

You're at your next job when you realize you may have left the last customer's alarm account on test with the monitoring center. What do you do?

Situational · Owning a missed step

Strong answer

Calls the monitoring center or lead right away to confirm and take it off test, tells the lead, and adds the step to their checklist.

Red flags

Hopes someone else took care of it.

Tell me about a technical skill you taught yourself in the last year. How did you practice it?

Behavioral · Teaching yourself skills

Strong answer

Names a specific skill, how they practiced and how they checked they'd learned it.

Red flags

Can't name a skill they practiced on their own, or only watched videos without ever trying it.

Tell me about a time at work or school when good notes or records saved someone else time.

Behavioral · Useful documentation

Strong answer

Describes what they wrote, why it was clear and how it helped.

Red flags

Sees notes as busywork.

Walk me through how you plan and install a wireless alarm system in a home so it works and doesn't cause false alarms.

Technical · Residential alarm installs

Strong answer

Walks the home with the owner, places motion sensors away from heat sources and sets them for pets, tests signal strength, sets entry and exit delays, tests the signal path to the central station and trains the family.

Red flags

Puts devices where it's easiest and skips the signal test.

Walk me through how you'd run and terminate data wiring from a home office to a structured media panel.

Technical · Home data wiring

Strong answer

Plans the path away from power wiring, respects bend radius, leaves service loops, terminates consistently, tests every run and labels and documents it.

Red flags

Runs cable alongside power wires and skips testing.

Your apprentice keeps rushing terminations and failing cable tests, which causes rework. What do you do?

Situational · Mentoring an apprentice

Strong answer

Shows the right technique, has them practice and slow down, checks their next runs and gives specific feedback.

Red flags

Takes over the terminations or snaps at them.

A homeowner's alarm has gone off twice this week for no clear reason, and they're angry. Walk me through how you'd find the cause.

Situational · Finding false alarm causes

Strong answer

Checks the event history for the zone, then inspects that device for heat, drafts, pets, a loose contact or a low battery, tests it and explains the fix to the owner.

Red flags

Bypasses the zone and leaves.

Tell me about a time you taught a teammate to program a panel or set up a camera system, and later saw them do it well alone. How did you teach it?

Behavioral · Teaching skills that stick

Strong answer

Showed, had them try, gave feedback and let them do it with less help each time.

Red flags

Told them once and moved on.

Tell me about a false alarm or callback that traced back to your own install work. What caused it?

Behavioral · Owning callbacks

Strong answer

Names the real cause, such as a loose termination or a motion sensor near a heat vent, owns it and describes the change they made.

Red flags

Blames the equipment or the customer.

Walk me through how you'd design cameras for a warehouse entrance where the customer wants to identify faces and read license plates.

Technical · Designing camera coverage

Strong answer

Sets a goal for each view, plans enough pixel detail for identification, picks lens and mounting angle, handles backlight and night lighting, and sizes bandwidth, storage and power.

Red flags

Picks one wide-angle camera and hopes it's enough.

Walk me through how you'd design access control on a main exit door so it's secure and still meets egress and fire rules.

Technical · Secure doors that still allow exit

Strong answer

Keeps free exit without a key or special knowledge, picks fail-safe or fail-secure hardware based on code and the door's use, adds request-to-exit and fire alarm release where required, and confirms with the AHJ.

Red flags

Uses a mag lock everywhere without thinking about egress.

Cameras on one switch keep dropping offline, but only at night. Walk me through how you'd find the cause.

Situational · Solving tough network faults

Strong answer

Suspects power first, since infrared lights draw more at night, checks the switch's PoE budget and logs, then tests cables and power supplies one at a time.

Red flags

Replaces cameras without checking power.

A school district asks whether the cameras in your design meet federal rules on banned brands. What do you do?

Situational · Procurement rules on equipment

Strong answer

Knows federal rules bar certain manufacturers when federal money is involved, gets written compliance documents from the manufacturer and changes the design if needed.

Red flags

Says it's fine without checking.

Tell me about training you built for technicians on a platform or skill, like access programming or network setup. How did you know it worked?

Behavioral · Training technicians

Strong answer

Built it from real jobs, checked skills afterward and saw fewer callbacks or faster installs.

Red flags

Wrote a manual nobody used.

Tell me about a time you raised the security standard of systems your company installs, like passwords or firmware updates. How did you get it adopted?

Behavioral · Raising cybersecurity standards

Strong answer

Set a simple standard, trained the team, built it into the checklist and audited jobs.

Red flags

Left security to the customer's IT person.

A reader at a commercial door accepts a valid card, but the door won't unlock. Walk me through how you'd find the cause.

Technical · Access control troubleshooting

Strong answer

Checks the event log for access granted, then the lock output, power supply and voltage at the lock, wiring, and the strike's alignment and door pressure, testing each in order.

Red flags

Replaces the reader first.

Walk me through how you'd confirm a camera system is recording and keeping footage as long as the customer needs.

Technical · Verifying recording and retention

Strong answer

Checks each camera's recording schedule, storage health and actual retention against the requirement, time sync and a test playback and export.

Red flags

Sees live video and assumes it records.

A building manager asks you to hold a fire-rated stairwell door open with a magnet that isn't tied to the fire alarm. What do you do?

Situational · Fire door hold-opens

Strong answer

Explains fire doors can be held open only with listed devices that release on alarm, declines the request and offers a proper solution with the fire alarm contractor.

Red flags

Installs it because the customer asked.

A work order says to replace a camera, but on site you find the cable is damaged inside a wall. What do you do?

Situational · Handling changed scope

Strong answer

Confirms the cause, explains options and cost to the customer per company process, gets approval, documents it and updates the office.

Red flags

Replaces the camera and leaves the real problem.

Tell me about the toughest commercial system problem you fixed. How did you narrow it down?

Behavioral · Solving hard commercial problems

Strong answer

Gathered event logs and the symptom history, tested one part at a time, such as power supply voltage, wiring, network or programming, proved the root cause and confirmed the fix held on a later check.

Red flags

Swapped parts until it worked.

Tell me about a time you worked in an open business without disrupting it. How did you plan around them?

Behavioral · Working in open businesses

Strong answer

Coordinated timing with the manager, kept the area safe and tidy and kept staff informed.

Red flags

Worked their own way and ignored complaints.

Walk me through installing a PoE camera, from mounting it to the moment the customer sees it on their phone.

Technical · Camera install and handover

Strong answer

Mounts it and seals the penetration, terminates and tests the cable, checks the switch's power budget, updates firmware, changes the default password, aims and focuses, sets recording and adds it to the customer's app.

Red flags

Leaves the default password or skips the cable test.

Walk me through how you update firmware on a customer's recorder or alarm panel without causing problems.

Technical · Safe firmware updates

Strong answer

Reads release notes and compatibility, backs up the settings, picks a time with the customer, keeps power steady, checks everything after and records the version.

Red flags

Updates everything at once without a backup.

A customer asks you to set the admin password to their house number so they won't forget it. What do you do?

Situational · Customer password safety

Strong answer

Explains the risk, helps them set a strong password and save it somewhere safe, and never keeps a copy.

Red flags

Sets the simple password, or writes it on the recorder.

The work order and the drawing don't match what you find on site. What do you do before you start?

Situational · Checking before starting

Strong answer

Stops, documents the differences, calls the lead or project manager and confirms the plan before working.

Red flags

Picks one version and starts.

Tell me about a time you taught a customer to use a system. How did you know they understood?

Behavioral · Teaching customers

Strong answer

Had the customer do it themselves while they watched and answered questions.

Red flags

Explained it once and left.

Tell me about a job that went wrong because of something you did. What did you change?

Behavioral · Learning from mistakes

Strong answer

Owns it plainly, such as skipping a settings backup before an update, and names the habit they changed.

Red flags

Can't name a mistake of their own, or blames the equipment, the customer or another tech.