[APP Remote Control] Download smart life /Tuya smart APP on your phone&Tablet to control the dimmer module anywhere/anytime. [Hand Free Voice Control] Compatible with for , home ,a simply to voice control the module. [Family Share Function]You can share the switch to your family with the limited right,create a smart home together with your family member. [Linkage Function] It can linkage with other switch module ,sensor and appliance in your home ,make create different scene possible,such as sleeping mode,working mode,dinner mode ,back home mode . [Timer,Schedule&Count Down Function]You can create schedule according to your personal requirement ,as well as Timer,count down function,smart and DIY your to the maximum extend. [Group-Control Function]Multi dimmer switch in different room can set in a group ,realize group control function. [Easy to Install] Mini size dimmer switch module can be installed in switch box or in lamp box easily. Product type: 1CH Wi-Fi Dimmer Module Rated Voltage: 100~240V 50/60Hz Operation frequency:2.412GHz-2.484GHz Protocol: WIFI IEEE 802.11b/g Size:42x42x21mm Colour:As Shown Material:plastic Package Contents: 4 x mini Dimmer 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.