Features: Microprocessor control, built-in voice chip gives you a better experience. It shows the concentration of flammable gas so you can prepare in advance. The alarm sounds at the scene when the alarm is sent, and the wireless alarm information is also sent to the host, and the relay closes the output. Catalytic gas sensor with high stability and low sensitivity drift. It can detect the leakage of flammable gas and protect the safety of people and property. Specifications: Condition: Brand New Color: Shown as Picture Material: ABS Optional Plug: US Plug, UK Plug, AU Plug, EU Plug Working Power Supply: AC 100 V-240 V Battery: 9V Rechargeable Battery (Excluded) Working Temperature: 0~50°C Working Humidity: 10%-95% Reporting Concentration: 2500 PPM (±1500PPM) Report: When the Concentration Exceeds 2500 PPM Wireless Transmission Frequency: 433 MHz FM Wireless Transmission Distance: 100 meters (Open Space) Output Port: open/normally close, 12 VM stream output set Package List: 1 * Alarm 1 * Instruction Manual 1 * Screw Package 1、Microprocessor control, built-in voice chip gives you a better experience. 2、It shows the concentration of flammable gas so you can prepare in advance. 3、The alarm sounds at the scene when the alarm is sent, and the wireless alarm information is also sent to the host, and the relay closes the output. 4、Catalytic gas sensor with high stability and low sensitivity drift. 5、It can detect the leakage of flammable gas and protect the safety of people and property.