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First Alert CO400CE 3Volt Battery Powered Carbon Monoxide Alarm

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First Alert CO400CE 3Volt Battery Powered Carbon Monoxide AlarmDESIGN AND INSTALLATION:First Alert CO400CE features an electrochemicalCO sensor, an 85dB horn, a single buttonfor test/silence and a red LED that blinks toindicate unit is receiving power. The frontaccess battery door allows battery accesswithout removing the unit from the wall. Thelow power warning indicator will cause thealarm to "chirp" when the batteries needreplacing. The low power warning indicatorcan be silenced for up to 8 hours. An AlarmAction Chart identifies action steps to take ifunit is in alarm.
Weight 5.5 oz
Operating Voltage Two 1.5V AA Batteries
Temperature Range 40F (4C) to 100F (38C)
Humidity Range 10% to 90% relative humidity (RH)
Audio Alarm 85dB at 10 feet
Test Button Electronically simulates a carbon monoxide condition, causing the unit to alarm
Alarm Reset Automatic when carbon monoxide clears; Press Test/Silence button to reset manually
Sensor Electrochemical
Indicator LEDs DC Power: Red LED flashes once per minute Local Alarm: Audio alarm (4 beep, pause, 4 beeps) and rapidly flashing Red LED
Listing UL2034
Product Guarantee 5 years *excludes battery