Features: APP: eWeLink,no need the router,No need wifi,2-in-1design,remote control(only with turn ON,turn OFF function) + App control(turn ON turn OFF+timer function). Please note that this product is not WiFi controlled product, it is App bluetooths controlled product. Timer and Delay,The delay can be set from 5 minutes to 20 hours,Set the light to turn off from 5 minutes to 20 hours. You can choose to download the eWeLink APP, or you can choose to implement control in the We-Chat applet eWeLink. brand new and high quality. how to use,long press the pairing button for 3Seconds until the led indicator flashse once,turn on cellphone bluetooth-function,then open App to control the E27 socket. input AC85-265V,suitable for incandescent lamp 60W-max,LED lamp 100W-max. Specifications: voltage AC85-265V Operating Systems: Android4.1& iOS9.0 or higher Size: 10x7cm Material: abs Dimension:E27 Package Includes: 4x E27 Light socket 1x Remote control note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.