1. Home

Smoke Alarms Comparison Chart



  Gentex Gentex BRK Electronics BRK Electronics BRK Electronics Gentex Gentex Gentex First Alert First Alert First Alert First Alert  












Model 7139 7139LS SC9120B SC7010B 9120B 9120F GN503F GN503FF 0827B PR710 SA320CN SCO501CN-3ST Model
Price $129.00 $154.95 $67.00 $72.00 $24.00 $65.00 $89.00 $99.00 $31.99 $39.99 $31.99 $94.99 Price
Product  Hard Wired T3 Smoke Alarm with Backup Battery Wall Mount T3 Smoke Alarm with Backup Battery Hard Wired T3 Smoke/ Carbon Monoxide Alarm with Backup Battery Hard Wired T3 Smoke/T4 Carbon Monoxide Alarm with Backup Battery Hard Wired T3 Smoke Alarm with Backup Battery Smoke Detector with Built-In Relay & Battery Backup 
Hard Wired Combo Smoke & CO Alarm w/ Battery Backup
Combination Photoelectric Smoke / CO Alarm w/ two Relays and Battery Backup
10 Year Sealed Battery, T3, Ionization Alarm
10 Year Sealed Battery, T3, Photoelectric Alarm
T3, Dual Sensor Alarm
Wireless Interconnectivity, Combo Photoelectric Smoke & CO Alarm with voice alert
Product 
Sensing technology Photoelectric Photoelectric Ionization  Photoelectric Ionization Photoelectric Photoelectric Photoelectric Ionization Photoelectric Photoelectric & Ionization Photoelectric, Electrochemical Sensing technology
Backup battery Yes Yes Yes Yes Yes Yes Yes Yes NA NA NA NA Backup battery
Carbon Monoxide No No Yes Yes No No Yes Yes No No No Yes Carbon Monoxide
Horn Strength 90dB 90dB 85dB 85dB 85dB 85dB 85dB 85dB 85dB 85dB 85dB 85dB Horn Strength
Power Hard Wired Plug in Hard Wired   Hard Wired   Hard Wired   Hard Wired   Hard Wired   Hard Wired   10 Year Sealed Battery 10 Year Sealed Battery 2 AA Batteries 2 AA Batteries Power
Light for Low Vision 177 candela, flashes 60 x's per  minute 177 candela, flashes 60 x's per  minute Add Flasher (Choose w/strobe) Add Flasher (Choose w/strobe) Add Flasher (Choose w/strobe) NO No No No No No No Light for Low Vision
Form C Relay Yes No No No No Yes Yes Yes, two for separate notification of smoke or CO No No No No Form C Relay
Tandem Connection Up to 6 No Max 18 No more than 12 of the 18 can be Smoke Alarms  Max 18 No more than 12 of the 18 can be Smoke Alarms  Max 18 No more than 12 of the 18 can be Smoke Alarms  Up to 6 Max of 12 Max of 13 No No No Yes Wirelessly connect up to 16 Alarms Tandem Connection
Mounting option Ceiling or Wall Wall Mount Ceiling Ceiling Ceiling Ceiling or Wall Ceiling or Wall Ceiling or Wall Ceiling or Wall Ceiling or Wall Ceiling or Wall Ceiling or Wall Mounting option
T3* Yes Yes Yes Yes Yes No No No Yes Yes Yes No T3*
Add on flasher compatible
No No Yes Yes Yes Yes Yes Yes No No No No
Add on flasher compatible


* Temporal 3 (T3) Evacuation sounding device (3 beeps, pause, 3 beeps, pause)

Shop Smoke Detectors