[Capabilities Requirement] The smart ceiling fan switch is not compatible with fans that have a built-in remote control system. Maximum load is 2A, supporting 5 fan speed levels. Operates only on 2.4GHz WiFi networks (not compatible with 5GHz). Designed for single-pole installation only and is not suitable for 3-way applications. A neutral wire is required for installation. [Hands-free Voice Control] This smart ceiling fan switch works with Alexa and HomeKit, allowing voice-controlled operation. [Remote Control & Scheduling] Control your ceiling fan remotely using the mobile app. Set timers or countdown schedules to automatically turn the fan on or off at desired times. [Power-on State Setting] Customize the power-on behavior via the app: choose "Power-on State ON" to automatically restart the fan at default 3-speed after power recovery, or "Power-on State OFF" to require manual restart. App Control Features: On/Off control, speed adjustment, timer settings, scheduling, and user sharing. Notice: 1. Not compatible with ceiling fans equipped with built-in remote control systems. 2. Maximum load capacity is 2A (supports 5 speed levels). 3. Requires a 2.4GHz WiFi network (does not support 5GHz). 4. Neutral wire must be present for proper installation. Specifications: Model Number: Smart Wifi Fan Switch Mechanical Life: 10,000 cycles Product Name: Smart Rotary Ceiling Fan Switch Max Power: 250W Dimensions: EU 86x86x45mm Operating Temperature: -10°C to 45°C Wireless Standard: IEEE 802.11 b/g, WiFi 2.4G Wiring Type: Live + Neutral App Name: Tuya Color: Black Material: Plastic Package Contents: 1 x Smart WiFi Fan Switch Note: Other items not included. Lighting effects and display differences may cause slight variations between the product image and actual color. Measurement tolerance: ±1–3 cm.