Carbon monoxide detector LM 201A certified and tested according to EN 50291. Display with temperature display, CO concentration, battery charge level, operation and alarm monitoring, as well as three colored LED control lights indicating the status of the CO detector. LED indicator with self-test function, TEST button for gas detector test function, error warning in case of malfunction, warning signal in case of low battery. Early warning system for early warning at different CO concentrations - CO alarm at dangerous CO concentration. Mute in case of false alarm for 5 minutes. Scope of delivery: 1 x CO detector type LM 201A, 3 x 1.5V DC batteries type AA. Effective detection gas: carbon monoxide Detection method: electrochemical sensor Operating voltage: DC 4.5V Working environment: Temperature 0℃ to 45℃ Relative humidity: 0-90%RH Idle operating current: 80±10uA Alarm current: 45~75mA Alarm sound level: >85dB (1m distance) Power indicator: flashes once every 45 seconds Fault