3 Pack Photoelectric Smoke and Carbon Monoxide Detector, Smoke Alarm Sealed-in 10 Year Lithium Battery-Operated (White)

Combo Smoke and Co Detector: Features electrochemical Carbon Monoxide sensing technology and photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires; helps minimize the selection of false alarms
10 Year Battery Operated: This combination smoke detector and carbon monoxide detector alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and co levels, even supposing there is a power failure; an end-of-life signal will allow you to know when it is time to replace the unit for safety
Test/Sience ButtoTest/Sience Button: Tests the unit for proper operation and resets the carbon monoxide alarm, Alarmn: Tests the unit for proper operation and resets the carbon monoxide alarm, Alarm
LOW BATTERY SIGNAL: Low battery voltage signal and end of life warning ensures the co detector can work normal. Environment friendly, without smell, radiation or harm. It might keep you and your circle of relatives protected at any time
A loud 85-decibel alarm sounds when Carbon Monoxide, and Smoke levels start to upward thrust, Easy to Install and Use: The alarm can easily install with mounting bracket. No hardwired anymore