First Alert


First Alert Battery Operated Carbon Monoxide Alarm

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First Alert

Carbon Monoxide Alarm

Keep yourself and your family safe from the threat of Carbon Monoxide. Includes 9V battery included.
  • Electrochemical Sensor: Most accurate technology available for detecting carbon
  • Mute Button: Mutes unwanted alarms. Also tests alarm function with same button.
  • Low Battery Signal Mute: Quiets low battery signal for up to 8 hours.
  • End of Life Signal: Provides audible confirmation alarm when battery needs to be replaced.


  • Normal Operating Voltage: 9V Alkaline Battery
  • Temp Range: 4°C to 38°C
  • Humidity Range: 10% to 95% relative humidity
  • Audio Alarm: 85dB at 10ft.
  • Test Button: Electronically simulates a carbon monoxide condition causing the unit to alarm.
  • Alarm Reset: Automatic when carbon monoxide clears; Press Test/Silence to reset manually.
  • Indicator LEDs Power: Green LED flashes once per minute CO Alarm: Audio Alarm (4 beeps, pause, 4 beeps) End of Life: Replace alarm 84 months (7 years) after installation
  • 86mm x 38mm x 127mm
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