General description The Wifi 433MHz Rolling Code Garage Door Remote Control Receiver Smart Switch Relay is a versatile device that allows you to control your garage door remotely via a smartphone app. It requires a wifi connection for the app functionality and supports voice control through compatible smart home systems. Technical specifications Voltage: 85-250V Material: Plastic Models: Self-locking, Interlocking, Inching Measurement allowed error: +/- 1-3cm Compatibility and accessories Compatible with Tuya Wifi Universal 433MHz Garage Door Receiver Package includes: 1 receiver, 2 remote controls Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.