Features
[CO & Smoke Combination Detector] With advanced electrochemical carbon monoxide sensor and a photoelectric sensor, the detection of CO and smoke are accurate.
[Human Voice Warning Alarm] When dangerous smoke or CO concentration is detected, it will warn you with loud human voice sound.
[LCD Display Screen] Can clearly indicate real-time carbon monoxide concentration in the surrounding air and remaining battery.
[Battery Power Supply] Powered by 3 * 1.5V AA (not included), no need to charge, no messy wires, convenient to use.
[Easy to Install] Comes with one bag of screws, easy to install the detector on walls of bedroom, living room, kitchen, etc.