1Microprocessor control, built-in voice chip gives you a better experience. 2It shows the concentration of flammable gas so you can prepare in advance. 3The 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. 4Catalytic gas sensor with high stability and low sensitivity drift. 5It can detect the leakage of flammable gas and protect the safety of people and property.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: Color: Shown as PictureMaterial: ABSOptional Plug: US Plug, UK Plug, AU Plug, EU PlugWorking Power Supply: AC 100 V-240 VBattery: 9V Rechargeable Battery (Excluded)Working Temperature: 0~50CWorking Humidity: 10%-95%Reporting Concentration: 2500 PPM (1500PPM)Report: When the Concentration Exceeds 2500 PPMWireless Transmission Frequency: 433 MHz FMWireless Transmission Distance: 100 meters (Open Space)Output Port: open/normally close, 12 VM stream output setPackage List:1 * Alarm1 * Instruction Manual1 * Screw Package