Carbon monoxide detector, carbon monoxide alarm powered by replaceable battery with LCD digital display, CO alarm monitor EN 50291 for safety (AA batteries not included)

[Safe Reliable] carbon monoxide alarm conforms to EN 50291 standard, used an electrochemical high sensitivity sensor with a lifetime of up to 5 years, can detect carbon monoxide gas leaks accurately and quickly, protecting you from hazards while minimizing false alarms.

[Light and Sound Alarm] Our CO alarm will monitor the level of carbon monoxide in the air in real time. When dangerous levels of carbon monoxide are detected, the red LED flashes and the buzzer will sound a continuous 85dB alarm to protect your family's life and property safety.

[Easy to Install] Just twist the backplate off detector, screw to the wall or ceiling, insert 3X1.5V AA batteries(NOT INCLUDED), put detector to the backplate and twist into position. You can hear the low power alarm when the power is closed to run out, at which point you can easily remove the alarm from the backplate again to replace with new batteries.

[Digital LCD Display] The screen displays wide range real-time CO levels from 000 to 999PPM. Blue backlight turns on and displays real-time levels when CO readings higher than 30 ppm, and detector alarms from 50 ppm. The alarm time depends on the level of carbon monoxide level. In addition, the LCD display will show different characters in different situations to help you identify the problem.