Every detector placed.
Every unit compliant.
We bolt photoelectric and ionization detectors into ceiling joists, wire them to monitoring panels, and walk you through red-blink–green-blink until every unit passes NFPA 72 inspection.
Property Managers
Juggling compliance across dozens of units before the fire marshal's next visit. We batch multi-unit buildings and deliver a single certificate of completion.
New Homeowners
Got the insurance rider rejection letter. Our hardwired interconnected install is accepted by 100% of carriers — we've never had a second rejection.
Landlords
Cities where hardwired interconnected alarms became code last January. We know the local ordinance, handle the permit pull, and get the sign-off.
Battery-Only vs. Hardwired
The single decision that determines whether your insurance carrier accepts the install — and whether the fire marshal signs off.
| Specification | Battery-Only | Hardwired InterconnectedRECOMMENDED |
|---|---|---|
| Power Source | 9V / AA cells | 120V AC + battery backup |
| Lifespan | 7–10 years | 10+ years |
| Battery Failure | Silences alarm | Backup maintains signal |
| Interconnect | Optional (RF only) | Required — all units trigger |
| NFPA 72 Compliant | New builds: NO | All occupancy types: YES |
| Insurance Accepted | ~61% of carriers | 100% of carriers |
| Code (post-2020) | Retrofit only | Required for new & remodel |
| Install Time | ~12 min/unit (DIY) | ~45 min/unit (licensed) |
| Installed Cost | $18–$35/unit | $95–$145/unit all-in |
Detector Technology Breakdown
Three technologies, two fire types. Every placement decision in your property is governed by which detector catches which threat first.
Photoelectric
Slow-smoldering fires
Responds to visible combustion particles — best for furniture and electrical smoldering.
Ionization
Fast-flaming fires
Detects invisible combustion particles from fast open-flame fires. Avoid within 20 ft of stove.
Dual-Sensor
Both fire types — our default
Combines both technologies. Installed in every bedroom per our standard NFPA 72 layout.
From Quote to Green Blink — Same Week
Compliance Quote
Submit your property type, story count, and current setup. We scope the job to your exact NFPA 72 requirements and return a fixed price.
Permit Pull
We handle the electrical permit with your municipality. Most jurisdictions issue same-day for residential hardwired work.
Crew Install
Two-person licensed crew. Ceiling joists located, wiring run, detectors mounted and interconnected. Red blink confirmed on every unit.
Green Blink Walkthrough
We walk you through every detector — green blink means interconnect confirmed. You receive a certificate of completion for your insurer and fire marshal.
Properties Passed. Riders Approved.
“Fire marshal signed off on all 24 units in one visit. First time in three years we passed without a single re-inspection.”
“My insurance broker sent me the rejection letter on a Friday. Alarm had the whole house hardwired and interconnected by Tuesday. Rider approved Wednesday.”
“They walked me through every detector placement, explained which type goes where, and left me a laminated copy of the NFPA 72 layout. Exactly what we needed for the city audit.”
“We manage 140 units across three buildings. After the new city ordinance dropped in January, Alarm batched all three buildings in under two weeks. Zero code violations.”
“The crew knew exactly where every unit needed to go — inside each bedroom, outside the sleeping area, top of the stairs. No guesswork, no back-and-forth with the inspector.”
“I tried to DIY it with battery detectors. Insurance rejected it twice. One call to Alarm, hardwired interconnected system installed, accepted immediately.”
“Fire marshal signed off on all 24 units in one visit. First time in three years we passed without a single re-inspection.”
“My insurance broker sent me the rejection letter on a Friday. Alarm had the whole house hardwired and interconnected by Tuesday. Rider approved Wednesday.”
“They walked me through every detector placement, explained which type goes where, and left me a laminated copy of the NFPA 72 layout. Exactly what we needed for the city audit.”
“We manage 140 units across three buildings. After the new city ordinance dropped in January, Alarm batched all three buildings in under two weeks. Zero code violations.”
“The crew knew exactly where every unit needed to go — inside each bedroom, outside the sleeping area, top of the stairs. No guesswork, no back-and-forth with the inspector.”
“I tried to DIY it with battery detectors. Insurance rejected it twice. One call to Alarm, hardwired interconnected system installed, accepted immediately.”
DIY vs. Professional Install
The gap isn't just time — it's the difference between a fire marshal signature and a re-inspection notice.
| Factor | DIY | Alarm ProfessionalRECOMMENDED |
|---|---|---|
| Install Time | 3–6 hours (research + install) | 2–3 hours, crew of 2 |
| Code Compliance | Self-verified — risk of gaps | NFPA 72 guaranteed or we return |
| Inspector Sign-Off | Not provided | Certificate of completion included |
| Insurance Acceptance | ~61% of carriers | 100% of carriers |
| Interconnect Wiring | Requires electrician license (most states) | Licensed electricians on crew |
| Warranty | Manufacturer only (1–5 yr) | 10-year labor + manufacturer |
| Re-inspection Risk | Common — avg 1.4 re-visits | First-visit pass rate: 98% |
| Detector Selection | Consumer research required | Specified per NFPA 72 placement rules |
Get My Compliance Quote
We'll send you a fixed-price quote within 2 hours, scoped to your property's exact NFPA 72 requirements.
Download the Code Checklist
Get a PDF of your municipality's current smoke detector requirements — every placement rule, detector type, and interconnect mandate in one page.
Ready when you are