... to four channels of configurable inputs, and supporting multiple thermocouple inputs with auto reference junction compensation and linear voltage ... the instrument can work stably under interference.Technical SpecificationInput type:Thermocouple: K, S, R, E, J, T, B, N, ... contact or signal terminal ≥2300VDC;Between SSR voltage output and thermocouple input ≥600VDCPower supply : 100~240VAC, -15%, +10% / ...