Loud 85 dB alarm
Permanent carbon monoxide sensor
Powered by 3х1.5V AA batteries
After 3 minutes when connected with battery the detector enter into the work mood.
The alarm sound pattern is four short alarm beeps, the red LED will flash while in alarm mode.
One ‘chirp’ every 30 seconds is an indication that the battery is low
Alarm memory feature :if the unit ever alarms, pressing the button, green LED will flashes once every second for one minutes and the peak alarm level will indicate on the LCD
Test/Reset button to test the unit electronics and verifies proper unit operational and reset the unit during CO alarm

Specification:
Power supply:3 AA 1.5V batteries
Standby current:<50uA(without LCD);<200uA(with LCD)
Alarm current: <75mA
Operation Ambient condition:5~40℃, 20~90%R.H.
Power consumption: 0.3mW
Sensor Life: 3 years