Feature 1DOUBLE SENSORS: The detector has dual sensors inside, which can detect various gases such as CO, natural gas, and coal gas, with high sensitivity. 2SOUND LIGHT ALARM: When CO exceeds the standard or gas leakage is detected, the alarm will sound and the red indicator will flash quickly. 3APPLICABLE GAS: Suitable for detecting household gas such as LPG, natural gas, coal gas, fuel, artificial gas, and liquefied natural gas, etc. 4EASY INSTALLATION: The gas shut off valve has a simple structure, easy to install, without the need to change the original configuration of the gas pipeline. 5FOR GAS CONTROL: Widely used for automatic control of gas pipeline ball valves, gas cylinder ball valves, various alarms, and other gas and liquid valves.Item Type: Gas Leakage DetectorMaterial: ABS, Aluminum AlloyApplication: Suitable for automatic control of gas pipeline ball valves, gas cylinder ball valves, various connection alarms, and other gas and liquid valvesPlug Voltage: AC 90-240VShut Off Valve: Rated Voltage: 12VDCNominal Pressure PN: 0.4MPaMaximum Working Pressure: 50kPaAlarm: Concentration Range: 2500PPM (1500PPM) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Controller1 x Alarm2 x Expansion Nails2 x Screws2 x User Manual