... RTD, mA DC, mV DC….etc Photoelectrical isolation in input, power and output modular, with strong anti-interference ability ... channels: 1,2,3,......16, completly photoelectronic isolation.Input: Universal input.Input SignalInput TypeReference RangesThermocoupleBSKEJTN 300.0 to 1800.0° ... .000 to 20.000mADigital I/O5 channels-dry-contract input, input resistance: ≤4.7KΩOutput Module12 channels relay alarm ...