Matter Smart Switch requires a hub of your chosen platform. Adding Matter-enabled Even devices to your smart home is fast and easy - the only other thing you need it the right hub. Which hub is right depends on which smart home platform(s) you'd like to control your home with. You can use the following :For iTV: TV 4K (2nd gen), TV 4K (3rd gen, 128 GB), Home (2nd gen), Home mini, For : Hub v3, Station, For Amazon: (4th gen), For Google: Nest Hub (2nd gen), Nest Hub Max, Nest Wifi Pro Attention: For using Please make sure the system of the mobile phone is above 16.1; A smart home hub must be set , then the Matter devices can be added into "Home"App. For using Google A "Matter enabled hub" must be set up in order to add Matter devices to the 'Google Home' app; Congured WiFi network and Matter-enabled hub must in the same local area network(LAN). Note for using Alexa APP: Please set up an device that is compatible with Matter( devices with built-in Matter support)in order to add Matter devices to "Alexa"App; Configured WiFi network and "" must in the same local area network(LAN); Please open the Bluetooth in the phone before adding . Matter Over WiFi Control WiFi Matter Control: Matter devices can work with any of apps and at the same time without requiring users to choose a single controller, platform, or app.(scan the QR code on your device using any of the /Google / Tuya APP / SmartT type:16A 1-Gang Colour:yellow Material:PC Size:39.2 x 39.2 x 18mm Package Contents: 1 x Matter WiFi Smart 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.