BRK First Alert Ionization Sensor Smoke Alarm

The Most Important Smoke Alarm for Your Kitchen Area

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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

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-9120 BRK First Alert Ionization Smoke Alarm 120 V
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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-SA303B BRK First Alert Ionization Smoke Alarm 9V Silence Feature
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BRK-SA340CN BRK First Alert Ionization Smoke Alarm 9V Lithium Battery
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BRK-SA305B BRK First Alert Ionization Smoke Alarm with Removable Lithium Battery
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BRK-SA320CN Double Sensor Battery-Powered Smoke and Fire Alarm
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BRK-9120

  • Ideal for installation in bedroom, hall, or basement
  • Intelligent sensor reduces nuisance alarms
  • Automatically performs internal test so you don't have to
  • Interconnect up to 18 units so that when one is activated, all sound for your quick escape
  • Installation is a snap with quick connect plug with 8" plug tails and universal mounting bracket with screw slots
  • Suitable for use in elevations higher than 5000ft in normal enviromental conditions
  • 10 year limited manufacturer warranty

 

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-SA303B

  • Hinged cover for effortless battery installation and replacement
  • Locking mechanism secures battery drawer and the alarm to the base
  • 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 when necessary
  • Approved for RV use
  • Suitable for use in elevations higher than 5000ft in normal enviromental conditions
  • 10 year limited manufacturer warranty
battery powered smoke alarm with silence feature
 

BRK-SA340CN / BRK-SA305B

  • 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-9120 BRK-9120B BRK-9120LB BRK-FG250B BRK-SA303B BRK-SA340CN BRK-SA305B
Operating Voltage 120V AC 120V AC with 9V battery back up 120V AC with 9V lithium battery back up 9V battery 9V battery 9V lithium battery 9V lithium battery
Operating Current 0.045 amps (standby/alarm) 0.045 amps (standby/alarm) 0.045 amps (standby/alarm) n/a n/a n/a n/a
Temperature Range 40° to 100° F 40° to 100° F 40° to 100° F 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) 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 85 dB at 10 feet 85 dB at 10 feet 85 dB at 10 feet
Sensor Ionization Ionization Ionization Ionization Ionization Ionization Ionization
Dimensions 5.59" diameter x 1.97" height 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 4.34" diameter x 1.87" height 4.34" diameter x 1.87" height
Weight 7.8 oz 6.5 oz 6.5 oz 0.5 lbs 0.5 lbs 0.5 lbs 0.5 lbs
Image brk-9120 alarm brk-9120b alarm brk-9120lb alarm brk-fg-250b alarm brk-sa303b brk-sa340cn alarm brk-sa305b alarm

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