... , 1 ~ 5V, or mV, such as thermal resistance (Pt100), thermocouples (K, E) start, stop, and so cleared.Input Signal Switching: Pt100 ... temperature compensation, K, E, 0~5V, 0~10mA, 4 ~ 20mA (through internal parameters ... ≤ 500 ω) DC 0-5V (output resistance ≥ 250 K ω)DC 1 ~ 5V (output resistance ≥ 250 K ω) Switch output: Relay output control - relay ON ...