Sonoff RF Bridge 433MHZ Wifi Wireless Signal Converter PIR 2 Sensor/ DW1 Door & Window Alarm Sensor for Smart Home Security Kits

This RF Bridge can convert most of the 433MHz RF Remotes into WiFi wireless. By adding the RF wireless Bridge to iOS/Android App eWeLink WiFi wirelessly, you can add up to four 1-4 buttons 433MHz Wireless RF Remotes to the RF Bridge device. After pairing the RF Remote buttons with RF controlled devices, you can directly control maximum 16 RF controlled devices on the App through WiFi/2/3/4G network.