Origin:Mainland China Model Number:CO Gas Detector Certification:CE,RoHS Type:Carbon Monoxide Detectors Gas Detector:carbon monoxide sensor Sensor Alarm:Lpg Leak Gas Sensor Batteries:1 9V batteries (not include) carbon monoxide gas:100PPM - 999PPM (50PPM) Size:113*74*46mm Voltage:240 volts Fire Alarm:human voice prompt and alarm Power Source:AC/Battery Environment Humility:10%-95% LED 2 in 1 CO & Gas Detector Features * Human voice prompt * High reliable catalytic combustion method * Gas concentration displaying(PPM) * Power supply from AC 90V-240V or 9V rechargeable battery(not include) * Intelligent microprocessor control * Auto low battery warning * Alarm memory function * Auto detect sensor failure 2 in 1 CO & Gas Detector *High reliable catalytic combustion method *Power supply from AC 90v-240v or 9v rechargeable battery(NOT include) *Intelligent microprocessor control *Auto detect sensor failure LCD Human Voice Prompt Gas Sensor * Human voice prompt * High reliable catalytic combustion method * Gas concentration displaying(PPM) * Power supply from AC 90V-240V * Intelligent microprocessor control * Alarm memory function Classical Gas Detector *High reliable catalytic combustion method * Power supply from AC 90V-240V * Intelligent microprocessor control * Auto low battery warning *Alarm memory function *Auto detect sensor failure Carbon monoxide detector CO Sensor Alarm Carbon Monoxide Detector 5 years sensor life CO Alarm Sensor LED Indicator Battery Power Fire alarm with human voice display 2 in 1 CO and Gas Detector Monitor Lpg Leak Gas Sensor Human voice prompt gas Alarm LED Indicator Battery Toxic Gas analyzer Carbon Monoxide Detector Toxic Gas Alarm CO Sensor Alarm Fire Security Alarm CH4 LPG detector propane butane multi gas Detector 2 in 1 LCD Display Carbon Monoxide & Gas Detector Battery Operated Toxic Gas CO Alarm with LED Light Flashing Sound Warning