This smart switch has mini body design, which can be directly installed in the switch bottom box without placing it on the ceiling for convenient maintenance and operation. WiFi and Bluetooth-compatible dual mode helps connect to the network faster, the connection network speed is 2 times faster than only WiFi. And it supports remote control through 3G/4G/WiFi on your phone. It is constructed of ABS material. The length of the product is 59mm, the width is 42mm and the height is 20mm. The switch works with for Amazon Echo and for Google Home, for Tmall Genie. And it also has APP real-time display, timer, scene control, family sharing functions. Item Name: Smart Switch Material: ABS Input Voltage: 100-240V 50/60Hz Maximum Power: 5-150W WiFi Standard: 2.4GHz 802.11 b/g/n APP Name: Smart Life Features: Dual Mode, Adjustable Wind Speed, Easy Installation Size Details: 5.9cm x 4.2cm x 2cm/2.32" x 1.65" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. It can only be used for fans, not for fan lights. Package Includes: 1 x Smart Switch 1 x User Manual