Video This RF Bridge can convert most of the 433MHz RF remote controls into WiFi wireless. Turn your traditional RF controlled home appliances into smart appliances. It supports to add at most 4 433MHz RF remote control, and can control maximum 16 RF controlled devices on the App through WiFi/2/3/4G network. Control your home appliances by using the downloadable app on android or smartphone for a more convenient way of remotely controlling your home. The specific timing function will turn paired devices on and off after setting a particular time. The SONOFF can be paired with Amazon Alexa, this will enable to to control paired devices via voice command. Features Remotely control your 433MHz RF devices by iOS or Android smartphone app via WiFi/2G/3G/4G networks, making life more convenient. Support to add max. four 433MHz RF remote, can control up to sixteen 433MHz RF devices. Support to work with door magnetic sensor, human body IR sensor, and more other sensors to realize security alarm, and you can check the working status of alarm sensor via app, keep your home safe. Can work with Amazon Alexa for voice control, control your appliances from anywhere (Alexa device not included). With timing function, RF devices will turn on or off at a specific time automatically after setting. NOTE: Not support to learn rolling code or dynamic code. Specifications Brand itead Model SONOFF® RF Bridge RF 433MHz Power supply USB 5V Wireless standard WiFi 2.4GHz Product Weight 40g Product Size 62 x 62 x 20 mm Package Contents 1 x RF Remote to WiFi Converter