Description: Wide compatibility: This ceiling fan speed switch is compatible with many kinds of switch box, such as reset switch, touch switch, mechanical switch, speed adjusting switch. Dual modes: This ceiling fan speed controller features dual modes: WiFi and bluetooth-compatible, which makes the controller will be faster and more stable while distributing network. Support voice control: This fan remote control smart switch supports voice control and it is compatible with many kinds of voice assistants, and it is easy to pair. Easy to install and use: This WiFi fan switch features a mini size and won’t take much space. It is convenient to install and can be put into a switch box easily. Automatic connection: This WiFi fan speed controller will connect to the last connected WiFi network once the WiFi is available again. Specification: Voltage:85 to 250v, 50-60hz. Power: 5 to 150W. WiFi support: 2.4Ghz, IEEE 802.11 b/g/n. Material: PC flame-retardant V0. Color: White, black. Size(LxWxH): Approx. 59x42x20mm/2.32x1.65x0.78 inch. Note: There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. This product only supports ceiling fans, not fan lights. When distributing the network, please operate with the on-off switch closed. Long press the reset switch to directly adjust the speed, when adjusting faster or slower, please release the switch and then operate. Touch switches and other mechanical switches can only operate on and off, and cannot support speed adjustment. You must first ensure that the switch is open before the on-off device can work. If the fan does not work when the speed being adjusted, please adjust the fan's minimum speed. The fan's compatibility and quality are different, so the minimum speed is different. Timer function only support fan's on/off, not support adjusting the fan's speed. When connecting to WiFi signal, please turn on bluetooth-compatible and WiFi to increase connection speed. Package included: 1 Piece fan switch.