First Alert CO410 Digital Carbon Monoxide Detector 3-Pack | Battery Operated Carbon Monoxide Alarm with Digital Display and Peak Memory | Electrochemical Sensor


ELECTROCHEMICAL CO SENSOR | Highly accurate sensor detects elevated carbon monoxide levels from faulty fuel-burning appliances, blocked chimneys, and running cars in the garage, even when gas can't be seen, smelled, or tasted.RELIABLE 85-DECIBEL SIREN | Effectively warns occupants of CO threat through sound; provides protection even when electricity fails or during power outages.DIGITAL DISPLAY | Easy-to-read backlit digital display provides a quick view of current and peak CO levels, plus threshold for dangerous levels; illuminates when button is pressed or an alarm is triggered.LOW BATTERY & END-OF-LIFE INDICATORS | Low-battery alert notifies when battery needs replacing; end-of-life signal notifies when the detector is nearing expiration



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