Combination Smok and Carbon Monoxide Detector Alarm Digital Display for Travel Home Bedroom Kitchen 9V Battery Operated White

2 in 1 smok detector/carbon monoxide alarm, well used in the place of carbon monoxide gas leakage and fire place, Understand the surrounding environment in real time - smok detector and carbon monoxide detector Indicator lights on the face of the unit display the presence of smok or carbon monoxide., When carbon monoxide and smok rise to alarm levels, the 85 dB alarm provides a clear, loud warning when it is discovered., Dual high stability sensors- Minimize carbon monoxide and smok detector alarm false positive., Battery operated device Can be easily installed and maintained without the need for an electrician.