This product is a wireless DIY WiFi switch/Tuya 4CH WiFi Switch module with 3 modes including Inching, Selfl-ocking and Interlock. It supports remote control by Tuya smart life App as as voice control through , google home. You can DIY many projects and it is widely use in lighting, electronic curtain, motor, etc.Supports WiFi network. Supports numerous WiFi smart switches on one smart phone.Supports status tracking: device status provided to the Tuya / Smart life.Supports remotely turn on or off connected appliances, for example light, electric , electric rice cooker, electric curtain, access control, etc.Supports max 8 enabled scheduled/countdown/loop for each device.Voice Control: Compatible with "Amazon" , for Google Home.Name: WiFi Relay ModuleInput: 5v -USB/ DC 7-32VOutput: 10A Max,4gangWIFI: IEEE 802.11 b/g 2.4GHzColour: blackMaterial: ABSSize: 74x74x18mmPackage Contents:1 * WiFi Relay ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.