... Gas And Carbon Monoxide Detector,Auto-reset after alarm;can work with electrovalve/exhaust fan;Available for Natural gas, LPG,CO MAIN FEATUREGas And ... /exhaust fan or manipulator and exhaust fanSMT adopted, excellent stabilityAvailable for Natural gas, LPG, COTECHNICAL SPECIFICATIONOperating voltage ... 5 minutesAlarm level: 10% LEL of Natural gas, 100 PPM of COAlarm indicator: Corresponding Red ...