... SYSTEM ,GAS DETECTOR ,for toxic and combustible gas,Temperature&Pressure signalFeature:1.Standard 4U tray-type metal construction,You ... detector, toxic gas detector, flame detector, pressure sensor and temperature sensor, etc.4.Control card adopts centralized monitoring, Channel ... type(optional cabinet) Input signal 4~20mA(two wire/three wire), BUS(four wire) Output signal 4~20mA Alarm setting low ...