... , current ,active power, reactive power ,apparent power ,PF,Kwh,Hz EU9 Series digital Kwh meter / coulometer/multimeter EU9 Series single phase multi meter , intelligent digital electronic coulometer, electric ... input impedance: ≤0.02Ω12) Dielectric strength:AC1500V/1min13) Communication: RS485, Modbus RTU14) Sampling rate: 2 times/s15) Insulated impedance:100M ...