... transmitter RS485 modbus protocol. DW series True Value Display (RMS) Power Meter,Energy Meter Features: 1 ... each phase ,connection :any ,1 and 3 phase .3) Display: 3 lines 4 digit LED to show ... 3 phase 4 lines is OK4) Alarms: Up to 4 relay output for voltage, current, ... products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power ...