1. A single indicator can precisely measure and display all of those crucial power parameters, such as three-phase voltage, current, active/reactive/apparent power, power factor and frequency, and integrates the energy metering function (kWh and kvarh).      
2. Feature a high-resolution LED or LCD display that supports multiple viewing modes (E.g., single-page cycling display and manual paging query).                  3. Standard RS485 communication interface supports open protocols like Modbus-RTU. It can be seamlessly integrated with PLCs, SCADA systems, energy management systems (EMS) or building automation systems (BAS).