Approved for wiring to devices located in hazardous zones 1/21 and 0/20, WAGO 4-channel intrinsically safe modules offer diagnostics per channel indicating short circuits and wire breaks. The 750-539 digital output module operates intrinsically safe solenoid valves. The 750-486 analog input module is used with field devices; each channel can be individually configured for measurement ranges of 0 to 20mA, 4 to 20mA or 3.6 to 21mA.