X-Sense SC01 10-Year Battery Smoke and Carbon Monoxide Alarm with Display, Dual

About this item 10-Year Battery Smoke and CO Detector: Provides 10 years of continuous power with built-in lithium batteries; saves you from battery replacement Combination Alarm with CO Readings: The informative LCD display clearly indicates real-time carbon monoxide (CO) levels in the surrounding air, as well as its battery level and working status 2-in-1 Protection: The smoke and carbon monoxide detector is equipped with both photoelectric smoke sensor and electrochemical CO sensor that both detect smoke and dangerous CO levels Practical LCD Display: Clearly indicates real-time carbon monoxide (CO) concentration in the surrounding air, as well as the remaining battery life and working status of the alarm; if a CO concentration of 30-999 ppm exists for a certain time period, the screen will be backlit blue, and the LED indicator will flash red 4 times every 5.8 seconds Simple Installation: Requires no rewiring; easy to mount this fire and CO alarm on any wall or ceiling with the included mounting bracket, screws and anchor plugs