... meter,panel meter,energy meter,ampere meter,volt meter,freqency meter,power meter,power factor meter,hour meter, m digital panel meter,panel meter,energy meter,ampere meter,volt meter,freqency meter,power meter,power factor meter ... , 380V, 500V Limit Of Voltage Fluctuation: +-20% Consumption: Max. 15mA Test Voltage: 2KV, 50 c/s. Measuring Range: 45-65 c ...