The CM100 Battery Operated CO Detector is used to check carbon monoxide leakage in residential home. Fast response to carbon monoxide for reminding people get away from danger. Features EN50291-1:2018 approved High quality electrochemical Sensor New fashion design LCD display Application The CM100 is used to check carbon monoxide leakage in residential home. Fast response to carbon monoxide for reminding people get away from danger. Specifications Measuring gas Carbon Monoxide Working voltage DC9V Sensor type Electrochemical sensor Sensor life >7 years Alarming level Follow EN50291 standard Working Environment Temperature: -10 - 50 Humidity: