Rated voltage: 230V; Frequency: 50Hz/60HZ Function: 1. Under voltage protection 140V-210V (adjustable) (default: 170V) 2. Over voltage protection 230V-300V (adjustable) (default: 270) 3. Over current protection 1-63A/1-80A (adjustable) 4. Reconnect time (delay on time): 1s-500s (default: 30s) 5. Electric leakage protection:10-99mA 6. Power display range：0-99999.9kw/h 7.Voltage/current/kW calibration: -9.9%-9.9% 8. Voltage meter 9. Ammeter 10. Energy meter 11.Timer