... opening & closing time. Specifications-Time-travel characteristic curve of sampling frequency, 40KHz,16 digits-Time measurement range, 0.1 ms~999 ... .05%-Travel resolution, 0.1mm-Coil current waveform of sampling frequency, 40KHz-Sampling precision, ≤0.1%-Coil current measurement range, ... switching power can’t work normally,0-10A-Power supply, AC 220V±10% 50Hz±5Hz-Ambient temperature, -10°C~60°C- ...