... parameter: 1PowerDC9V battery2Standby current<= 35uA 3Alarm density150+/-50ppm CO gas4Alarm current< 30mA5Sensoruse newest importing electrochemistry carbon,monoxide sensor ... seconds,When it at standby status,flash quickly when CO leakage. 7Lound buzzer output: 85db at 3M distance8Low ... 20~95%R.H. 11standard:Electrochemistry CO alarm only use to detect CO gas.CO gas is one poisonous gas,without ...