Specifics:

Power supply: 3AA size batteries(not include)

Sensitivity and time: 50ppm, alarms within 60-90 minutes

                                    100ppm, alarms within 10-40 minutes

                                     300ppm, alarms within 3 minutes

Standby current: <200Ua

Alarm current: <75Ma

Operation Ambient condition: 5~40 degree Celsius, 20~90%R.H.

Mainly designed to protect you with early warning of Carbon Monoxide. Please do read carefully the user manual before operating and pay attention to the warnings mentioned.