Purchase Note: Our receiver size is 4.56 inches * 2.13 inches * 1.1 inches.Signal Stabilization & Guarantee433mHz stable signal, 50-60hz stable frequency, no interference through the wall, throw away the traditional wall switch, easy to control; Ultimate warranty and customer support: Enjoy 12 months warranty for hardware related issues combined with friendly 24/7 support. Note: If you have any problems when using this product, please feel free to . This is most likely a problem with the operation, not a product quality problem.Timing Off Function & Mute FunctionIt has 4 timing settings (1/2/4/8), which means Power off after (1H/2H/4H/8H). When used with a smart home device, you can set the appointment/countdown to turn on/off at the specified time You can use the Smart Life APP to implement the mute function. For specific operations, refer to the operation steps on the product description page below.Control Fan and Light on/off & 3 Fan Speeds Designed with separate buttons, including multiple functions, can control fan and light on/off separately; Control the 3 fan speed, including 1/2/3 / level.WIFI Voice Control & APP SupportCompatible for Alexa, Google Assistant, IFTTT, can voice control ceiling fan light; APP Support:Ceiling fan Remote control and receiver for iOS and Android mobile apps. Sync Status - Real-time device status provided to the app, Download and Open Smart Life Mobile App. NOTE: when you choose the router connected to the mobile app, please select the 2.4G network. Don't choose 5G or 5.8G network. Otherwise, the device may not be able to connect to the APP.