Digital Carbon Monoxide Detector with LCD Display and Sound Warning, Fault/Alarm/Operate Indicators,AA Battery Powered, CO Sensor Complies with UL 2034 Standards for Home(3/Pack)

Easy to Install: The co alarm and comes with screws for simple installation on walls or ceilings. Powered by 2 x 1.5V AA batteries (not included),It requires no hardwired, portable and easy installation,no need for socket, The battery means constant monitoring, although there is a power failure!It’s convenient to replace the battery and has a long service life.
High Accuracy & Reliability: Features an advanced electrochemical carbon monoxide sensor that appropriately detects real-time CO lcarbon monoxide levels.
Instant Alert: When carbon monoxide detectors rise to alarm levels, CO sensor detects CO, the red LED will flash,LCD Blue back light will be lighted, An early warning will be delivered through a loud 85-decibel alarm.
Self-test Function and Informative LCD: The unit will sound “chirp” and red LED flashes once as power up, “888” at the LCD Then pressing the test button, the unit will sound beeps with red LED flashes. Displays real-time CO levels and remembers dangerous CO levels for the reason that last preset. ’Err’ at the LCD to indicate the unit is malfunctioning. ‘Lb’ at the LCD toindicate it low battery and need replacement. “000” displays at the LCD for 3 seconds and then enter in normal operation mode.
Wide Application: The carbon monoxide detectors is suitable for living rooms, kitchens, bedrooms, offices, hotels, ,dormitories and portable co2 detector for shuttle,and the like. It can effectively prevent fire accidents and provide reliable protection for your circle of relatives’s safety.