Sonoff RF Bridge 433MHZ Wifi Wirele Signal Converter PIR 2 Sensor/ DW2 Door & Window Alarm Sensor for Smart Home Security Kit This RF BridgeR2 433 can convert most of the 433.92MHz RF Remotes into WiFi wirele. By adding the RF wirele Bridge to iOS/Android App eWeLink WiFi wirelely, You can add up to 16 RM433 RF or alarms, also add them together (max. 16 items). One 4 button remote controller can learn 4 devices, which means 64 devices supporting 433 MHz frequency can be added on the app through WiFi/2/3/4G network.It can be used for most of the 433.92MHz RF Remote controlled products, like RF controlled switch, RF controlled socket, RF controlled bulb, RF controlled door opener, etc. You can set totally 8 schedule/countdown/loop timers to turn on/off the RF controlled products.Even more exciting is that it will work with the 433.92MHz door magnetic sensor, 433.92MHz human body IR sensor, and more other 433.92MHz sensors to realize security alarm, and allowing you to DIY smart scenes. Note that the alarm push only comes in the owner's account, those users being shared can't view the alarm push.The RF BridgeR2 can work with SONOFF DW2-RF wirele door/window sensor that allows users to set the smart scene for the sensor and the device to be controlled, then when you open/close the door, the device will be triggered on or off.Note 1:The receiving supports fixed code 433.92 frequency, like PT2260, PT2262, PT2264, EV1527, etc.The product doesn't support to learn rolling code and dynamic codeYou can't see device status changes in the App.Note 2:What's new on Android & iOS 2.5.0 and higher versions?Scheduled/countdown timers are supported.iOS App supports to add this product.433MHz RF curtain switch and RF alarm are supported. As A "Bridge" to Other Protocol Device Traditional 433Mhz Reomte Control Devices, Instantly Become Smart Note:The receiving supports fixed code 433 frequency: PT2260, PT2262, PT2264, EV1527. Not Support to learn rolling codes. A Button for A Scenario Creat a scene you like. Simply pre the remote control button to trigger WiFi or Zigbee devices in eWeLink to enter a scene. Control All Devices Simultaneously Once the RF BridgeR2 has succefully learned common remotes, you can use the remotes to control lots of devices in a time. Create Smart Scenes with 433Mhz Sensor Multiple Timer Way Works with More Ecosystem