Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [Capabilities Requirement] The smart ceiling fan switch does not compatible with fans having a built-in remote control system. The maximum load is 2A (provide 5 fan speed). Only uses under 2.4GHz WiFi (not 5GHz). Only used as a single-pole ceiling fan wall switch (NOT 3-way). The neutral wire is required. [Hands-free Voice Control] Smart ceiling fans works perfectly with Alexa and Home. [Remote Control & Schedule] You can turn on the ceiling fan through APP. Create timer or countdown schedules to set your smart ceiling fan control to automatically turn on and off at specific times. [Power-on State Setting] You can change freely the power-on status via APP: "Power-on State" ON: Automatically turn on the fan after power failure recovery, and the default 3-speed wind speed. "Power-on State" OFF: Needs to be restarted manually after power failure recovery. App Control: On /Off / Speed Control/Timer Scheduled / Timer / Shares Works with Alexa Works with Home Notice: 1. The smart fan switch is not compatible with fans with built-in remote control system. 2, The maximum load is 2A (provide 5 speed levels). 3, Only use wireless network below 2.4GHz (not 5GHz). 4. There must be a neutral line. Specification: Model Number: Smart Wif Fan Switch Mechanical Life: 10000 Product Name: Smart Rotary Ceiling Fan Switch Max. Power: 250W Size: EU 86x86x45mm Working temperature: -10~45 Wireless standard: IEEE 802.11 b/g,WiFi 2.4G Wire type: Live + Neutral App name: Tuya Color: Black Material: Plastic Package Contents: 1*Smart Wifi Fan 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.