This is the gas alarm detector kit, it will alarm sound and send signal to close the gas valve when it detect gas leakaging in the kitchen and house.

Gas alarm with 3/4 inch electromagnetic valve
Model: EF-PNG101V20
This is gas alarm system with solenoid valve(DN15 or DN20 or DN25)
CE approved
Sensor: Semiconductor
Power: 110V or 220V/50Hz
Detect gas type:
Coal gas: 1000~5000ppm
Liquid petroleum gas: 1000~10000ppm
Natural gas: 1000ppm~5000ppm
Operating Temperature: -10℃ ~ 50℃
Ambient Humidity: 10%~ 90% RH
Alarm Volume: ≥85db@1M
Alarm Pattern: BI 0.5s--pause 0.5s repeat this pattern
Power Consumption: ≤3 W
Electromagnetic valve: 3/4 inch DN20 brass