General description Carbon monoxide detector LM 201A certified and tested according to EN 50291. This battery-powered gas detector features a display that shows temperature, CO concentration, battery charge level, function monitoring, and alarm status. It includes three colored LED control lights indicating the status of the CO detector. Technical specifications Effective Detection Gas: Carbon Monoxide Detection Method: Electrochemical Sensor Operating Voltage: 4.5V DC Working Environment: Temperature 0℃ to 45℃ Relative Humidity: 0-90% RH Idle Operating Current: 80 ± 10 µA Alarm Current: 45 ~ 75 mA Alarm Sound Level: > 85 dB (1 m distance) Power Indicator: Flashes once every 45 seconds Fault detection: detection every 2 minutes Compatibility and accessories Package Contents: 1 x CO Detector Type LM 201A 3 x 1.5V DC AA Batteries included Usage Early warning system for different CO concentrations with an alarm at dangerous levels. Mute the sound in case of false alarm for 5 minutes.