Feature: 1.Remote control ON/OFF at anytime from anywhere by phone. 2.Review current ,voltage, leakage current, total kWh on phone 3. Timer function in smartlife TUYA app 4.Can set over voltage/under voltage/over current /leakage current in app or can set these by manual 5.Under voltage protection 140V-210V (adjustable) (default: 170V) Over voltage proteciton 225V-295V (adjustable) (default: 265) Over current protection 1A-63A (adjustable) (default: 40A) time (delay ): 1s-500s (default: 30s) Voltage/current/kW calibration: -9.9%-9.9% Action time: 1-30s (detault 1s) power consumption less than 2W White backling Note:This meter Only supports 2.4G Wireless Network, NOT for 5G The product can cut off L and N both. Rated voltage: 230V Frequency: 50Hz/60HZ size:95 x 45 x 68mm Material: ABS colour: White Package Contents: 1 x Smart Switch 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.