... Be able to work with electrovalve /exhaust fan;Available for Natural gas, LPG, Gas and CO detectorMAIN FEATUREHigh reliability sensorAuto ... work with electrovalve /exhaust fanSMT adopted, excellent stabilityAvailable for Natural gas, LPG, CO TECHNICAL SPECIFICATIONOperating voltage: 220V AC or ... up time: 3-5 minutesAlarm level: 10% LEL of Natural gas, 100 PPM of COAlarm indicator: Corresponding Red LED ...