... , time zone switch, repeated power out and on, will not affect the measurement accuracy of the meter.4 ... automatic transfer, 4. The power of it is supplied by a separate lithium battery in order to maintain ... Technical Parameters Accuracy ClassClass 1.0,Rated Voltage(V)3 x 57.7/100, 3 x 220/ ... 115%, when no current is in circuit, meter will output not more than one pulseMax. Operation Temperature ...