... Performance CA-386D Natural Gas Alarm with Valve Features: Detection Gas: manufactured gas (hydrogen), natural gas, liquefied petroleum gas (LGP)Excellent sensor, ... stable and long-life, excellent oil smoke resistant performanceAlarm Output: visual light and audio alarm ... 125~750*10-6,Natural Gas:1-25%LEL,Liquefied Petroleum Gas:1~25%LELPower Supply: ...