Carbon Monoxide Detector Alarm CO Detector Alarm Sensor with LCD Display Memory Function Battery Operated for House Bedroom Living Room Factory Hotel

Features:
Backlit LCD display with alarm memory function to indicate the peak alarm level.
Loud 85dB alarm and a rapid flashing red LED will be sent out when danger detected, providing 24/7 protection.
Test/ Reset button to check the electronics and verify the correct operation of the device, and to reset during alarm.
Sensitive to detect odorless invisible and deadly carbon monoxide in the air, and give the quick reaction once danger occurs.
3 * AA batteries(NOT INCLUDED) operated for convenience, low power indication to replace in time.
It can be quickly installed in your home without requiring an electrician, no wire needed, not hardwired.