Three phase programmable ammeter led PA7194I-DK4 K series programmable ... to be measured transmitter output, the output is 4 - 20mA, 0 to 5V, 4 ~ 12 ~ 20mA analog optional (K3, K4 ... distance of 1.2 km.4, for a wide range of combination of features: three-phase power meter power factor meter ... show that electrical parameters of the A and C phase voltage, current, true RMS and frequency; by keyboard ...