Measuring range: 0.000C~0.500C~1.000~0.500L~0.000L.
Accuracy rating：±0.5 % Fs±1 digit.
Signal input： Voltage AC 0~500V(PT */ 100V) 
Current ：AC 5A (CT */ 5A or 1A)
Sampling rate: about 1 times/s.
Measuring display mode: RMS measurement, four-digit LED nixie tube display.
Display resolution: Max. display resolution:0.001PF.
Input circuit consumption: <1VA
Auxiliary power supply: AC 220V,50/60Hz(Can customize other values).
Auxiliary supply consumption:< 3VA.
Additional functions
2-channels switch value output: Higher and lower limit alarm output by two groups of reply, contact rating is AC250V/2A、DC30V/2A.
1-channels analog quantity output: can be set freely as DC 0~10mA、0~20mA or 4~20mA, accuracy rating is ±0.5

Communication interface： RS485 serial communication， applying MODBUS_RTU communication protocol.