... 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 ... 4. Input signal: AC current 5. Measuring range: 0-600V AC; For the current over 600V can use the AC current transformer 6. Consumption: <3 ...