digital panel 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,hour meter, moving coil ... 7. Max. Signal consumption: <0.3VA 8. Operating environment: Temperature: 10~50 C degree humidity: ≤85% 9. Storage environment ...