... 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 ... LED displays (red or green) 2. Accuracy: 0.5% +- 1 digit 3. Auxiliary power: AC ... <3.2VA 7. Max. Signal consumption: <0.3VA 8. Operating environment: Temperature: 10~50 C ...