The CO detector is a battery-operated independent carbon monoxide (CO) alarm and with the inside carbon monoxide sensor to help protect you and your family from the dangers of CO. Specifications: Power supply: 3 pcs 1.5V AA batteries (not included) Monitor current: less than 35 uA Alarm current: Alarm concentration: 50(+/-30%)ppm of carbon monoxide gas Low-voltage warning threshold voltage: 3V +/- 0.3 V; Environment: Temperature: 0 Celsius ~~ 40 Celsius, relative humidity: 20% ~ 90% non-condensing; Alarm sound: three meters in front of more than 85 db; Mounting Type: Wall/Ceiling mount. Package Including: 10x CO Alarm (Batteries Not Included) Instruction: When a dangerous level of carbon monoxide is detected the red LED will pulse and a loud alarm pattern will sound. Standby: Green Led flashes once every 30 seconds. Alarm: Red Led quickly flashes 4 times with unit chirping every 5 seconds, then repeat. Sensitivity/Alarm Time: The detector is easy to install and use. In a CO emergency, the red LED pulses and an 85 db horn sounds at specific intervals until the CO threat is eliminated.
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