Fariy Smoke And Carbon Monoxide Alarm,Carbon Monoxide Alarm Detector Co Alarm Detector Powered By Battery With Lcd Display Voice Warning

Smoke and carbon monoxide detector offers excellent, making a loud alarm (85 dB) when it detects a buildup of smoke or carbon monoxide, and instantly alert those in danger, ensure the safety of personal life.
Low current consumption, long standby life, powered by 3 AA batteries (not included), low battery prompt.
Built-in electrochemical sensor with high accuracy and infrared photoelectric sensor, high stability and sensitivity, reduces false alarms.
Combined Carbon Monoxide and, a single alarm can be installed where previously two were needed. Reduce installation time and help to keep home decoration attractive.
Alarm concentration: 50PPM.60～90 minutes; 100 PPM.10～40 minutes; 300 PPM. 3 minutes.