Backlight illuminates only when any button is pressed or unit is in alarm. It also has Peak Level Memory, which remembers and displays the highest levels detected when the Peak Level button is pressed. The battery may need to be replaced: A green blinking light means. Complete with a backlit digital display that shows visual confirmation of CO levels. A white light appears on certain smoke alarms (particularly First Alert), while a green. The low power warning indicator can be silenced for up to 8 hours. The First Alert Combination Smoke and Carbon Monoxide Alarm integrates with existing wiring and features a universal mounting bracket that makes installing the unit quick and easy. The low power warning indicator will cause the alarm to "chirp" when the batteries need replacing. First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display. The front access battery door allows battery access without removing the unit from the wall. This unit features an electrochemical CO sensor, an 85dB horn, a silence feature, and a red LED that blinks to indicate unit is receiving power. On First Alert carbon monoxide alarms, the red light flashes to show the. The First Alert Model CO410 is a battery operated, 3V (two 1.5V AA batteries) single station carbon monoxide alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings as defined in standard NFPA 720. The Apollo Series 65A Photoelectric Smoke Detector with Flashing LED and.
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