Compact Design, High performanceThree Phase Digital Panel Meter, Power Meter, Digital Meter,Multifunctional Panel meter,meter... Display: 3 1/2 digits. LED displayAccuracy: 0.5% ±2 digitsAuxiliary power: AC 110V ± 10% 50/60HZ or 220V± 10% 50/60HZInput signal: DC voltageMeasuring range: 0-600V DC.Consumption: <3VAOperating Environment: temperature 0~40 humidity≤70%Voltage Testing: over 2000V