... Excellent Smoke Resistant Performance Features:1.Detection Gas: manufactured gas (hydrogen), natural gas, liquefied petroleum gas (LGP)2. Excellent sensor, stable ... :Hydrogen:125~750*10-6,Natural Gas:1-25%LEL,Liquefied Petroleum Gas:1~25%LELPower Supply:AC220V ... SRecovery Time:≤20 SDimension:130X80X50 (mm)Valve SpecificationsApplicable Gas:Natural Gas,LPG,Manufactured GasWay of Switch offDC Pulse Drive ...