1. Suit for 110V,120V,220V, 230V, 240V AC low voltage system
2. 7 +1 digits LCD display (9999999.9 kWh)
3. Measure U, I, P, Q, S, PF, F, kWh, kvarh, Multi-tariff energy value
4. Record historical energy for latest 31 days (per 15min.), latest 12 months and latest 10 years
5. kWh accuracy : 5(6)A class 0.5s，5(63)A class 1.0
6. 2 LED indicates pulse (Settable for kWh or kvarh)
7. LCD display prompt for phase sequence error
8. 3 keys for programming , 35mm DIN rail installing, standard DIN ED5002
9. One RS485 port, MODBUS or DL/T645 protocol (selectable)
10. Standard: IEC62053-21/ 23