Function: 1. Under voltage protection 140V-210V (adjustable) (default: 170V)2. Over voltage protection 230V-300V (adjustable) (default: 270)3. Over current protection 1A-63A (adjustable) (default: 63A)4. time (delay ): 1s-500s (default: 30s)5. Electric leakage protection:10-99mA6. Power display range:0-99999.9kw/h7.Voltage/current/kW calibration: -9.9%-9.9%8. Voltage meter9. Ammeter10. Energy meter11.TimerRated voltage: 230V; Frequency: 50Hz/60HZ: ELECTRICALDisplay Type: LCDPower Supply: ACPhase: single phasecolor:As shownMaterial:plasticPackage Contents:1 x Smart kWh Meter(Due to different product batches, the appearance may be different, the functions are the same)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.