... connect to the 220V.Summary of Source and Measure Functions Function Measure SourceDC V0~50V (the upper display ± 30V)0~10VDC ... , NE, J, K, T, B, R, S, NOthers Loop supply, Step, Ramp, Dual display Specifications Specifications are based on a one ... a total resistance not exceeding 25Ω. ETX-1825,handheld calibrator,multi function calibrator,Multifunction Calibrator,0.05% Accuracy