BRK First Alert Ionization Sensor Smoke Alarm

The Most Important Smoke Alarm for Your Kitchen Area

We Guarantee to Have the Best Price
BRK-9120B

What's special about these alarms?

  • Ionization sensor is perfect for fast moving flames found often in your kitchen due to grease or ignited wastebaskets
  • Easy to install and maintain, quality-engineered units so that you receive years of virtually maintenance-free protection
  • Includes AC, DC, and AC/DC models with special features like silence buttons and battery compartment locks
  • Meet UL 217 standard which requires repeating horn pattern of 3 beeps, pause, 3 beeps
  • Click for More Features
UL

BRK Brands / First Alert Ionization detectors consist of two plates separated by about a centimeter. The battery applies a voltage to the plates, charging one plate positive and the other plate negative. When smoke enters the ionization chamber, the smoke particles attach to the ions and neutralize them, so they do not reach the plate. The drop in current between the plates triggers the alarm.

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PART # DESCRIPTION PRICE
BRK-9120B BRK First Alert Ionization Smoke Alarm 120 V with Battery Pack Up
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BRK-9120LB BRK First Alert Ionization Smoke Alarm 120 V with Lithium Back Up
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BRK-FG250B BRK First Alert Ionization Smoke Alarm 9V
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BRK-SA340CN BRK First Alert Ionization Smoke Alarm 9V Lithium Battery
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BRK-SA320CN Double Sensor Battery-Powered Smoke and Fire Alarm
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BRK-9120B / BRK-9120LB

  • Side load battery installation
  • 6 position mounting bracket mounts to any electrical box up to 4" octagonal
  • Optional locking mechanism deters theft of battery or smoke alarm
  • Suitable for use in elevations higher than 5000ft in normal enviromental conditions
  • 10 year limited manufacturer warranty
first alert smoke alarm 9120
 

BRK-FG250B

  • Battery power indicator and warning "chirp" when battery low
  • Cover will not close if battery is missing for added protection
  • Hinged cover for effortless battery installation and replacement
  • Locking mechanism provides tamper resistant security
  • Comes with 9V battery, mounting anchors, screws, and manual
  • Test/silence button allows you to quickly and easily ensure functioning properly as well as silence your alarm with necessary
  • Suitable for use in elevations higher than 5000ft in normal enviromental conditions
  • 10 year limited manufacturer warranty
battery powered smoke alarm
 

BRK-SA340CN

  • Tamper proof design is ideal for rental properties
  • This is the only tamper proof alarm proven to last 10 years
  • Lithium battery CANNOT be removed (SA340CN) or CAN be removed (SA305B) and lasts the life of the unit, 10 years
  • Mute button allows you to silence the detector when there is a false alarm
  • Suitable for use in elevations higher than 5000ft in normal enviromental conditions
  • 10 year limited manufacturer warranty
tamper resistant smoke alarm with 10yr battery
  BRK-9120B BRK-9120LB BRK-FG250B BRK-SA340CN
Operating Voltage 120V AC with 9V battery back up 120V AC with 9V lithium battery back up 9V battery 9V lithium battery
Operating Current 0.045 amps (standby/alarm) 0.045 amps (standby/alarm) n/a n/a
Temperature Range 40° to 100° F 40° to 100° F 40° to 100° F 40° to 100° F
Humidity Range 10% to 90% relative humidity (RH) 10% to 90% relative humidity (RH) 10% to 90% relative humidity (RH) 10% to 90% relative humidity (RH)
Audio Alarm 85 dB at 10 feet 85 dB at 10 feet 85 dB at 10 feet 85 dB at 10 feet
Sensor Ionization Ionization Ionization Ionization
Dimensions 5.59" diameter x 1.97" height 5.59" diameter x 1.97" height 4.25" diameter x 1.6" height 4.34" diameter x 1.87" height
Weight 6.5 oz 6.5 oz 0.5 lb 0.5 lb
Image brk-9120b alarm brk-9120lb alarm brk-fg-250b alarm brk-sa340cn alarm

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