【Neutral Wire Optional】Two Wirings Methods❤️(N+L wire / only L wire) ;No neutral wiring required for the single live wire version;Wire the neutral wire on the switch when needed;❤️No capacitor needed for the new update version for better user experience without noise from electric current;Tuya Zigbee hub is required for the normal use of this switch. | 【App Control & Voice Control】❤️Compatible with Alexa,Google home and Yandex allows free voice control ;remotely control devices and intelligent settings allowed on your smart phone via Smart Life/Tuya App wherever you are;Take full control of connected appliances with timers, schedules and countdown (1/5/30 mins, 1 hour, etc.) with the app; share control with family and friends for added convenience | 【Ultimate Beauty& Backlight ON/OFF Optional】Ingenuity design assures highly texture beauty ,Toughened Glass Surface Prevents the scratch from knives or something hard,dampproof available for humid operation. ON/OFF relay status as remember last status when power off and backlight switch setting in Smart Life App for better sleep at night;capacitive touch control, turn on/off your light with a single touch and scratch resistance glass panel gives the best look to blend with any wall design. | 【New Idea for 3 Way Circuit】 (two switches control one light) This smart switch is able to be controlled by various ways like App control,touch control and voice control;achieve multi-control by associating to other smart switches to get 2/3-way circuit for your house lights.(Note:You can multi-control associate of this switch to multiple different switches,but several gangs on one switch is not available,only one gang on one switch can be associated for multi-control.) | 【Note and Instructions】❤️Tuya Zigbee 3.0 Hub required and the Hub is not included in the package.It need to be purchased separately. Only supports 2.4G network; The back installation width is slightly larger than the traditional 1gang switch box ,so it didn't fit in the old metal electrical boxes inside the house.Full 2-year warranty and 60-day refund guarantee for complete satisfaction.