... same time, Automatic calculation of three-phase unbalanced rate-Automatic selection of the output current, the max. value can reach up ... %±0.2μΩ,resolution, 0.1μΩ -Test current,0~10A, automatic selection as per test range -Test Voltage:24Vdc -Input, AC 220V ... ±10%,50Hz±1 Hz, fuse,2A -Working temperature: 0 ° C to 40 ° C -Relative humidity ...