... communication: current, voltage, active power, frequency, kWh. Pmac901 Single Phase Energy Meter with following Features:1. LCD display kWh data2 ... voltage, active power, frequency, kWh.3. 35mm DIN rail instaling, standard DIN ED50024. Active energy accuracy up to class 15. ... opposing energy8. One RS485 port, support MODBUS protocol Single Phase Din Rail Kwh Meter ( Energy Meter, Static Meter, Electric ...