... /current/power factor/Kwh,etc 2) 4-20mA analog output 3) 2 alarm, RS485 Coulometer, ampere & voltage meterToky DW9 series Single ... Phase Power Meter with follow features:1) 3 lines 4 digit LED display, easy to read;2) To ... , power factor, active power, reactive power, apparent power, HZ, KWH;3) With up to 2 relay alarm output, alarm value set ...