Sonoff RF Bridge R2 433MHz to Wifi Smart Home Security Remote Switch 1. Convert a 433MHz RF remote control into an application via WiFi 2. Make the 433MHz radio frequency device App remotely controllable 3. Support adding four 433MHz radio frequency remote controlcurtain switchalarm 4. Supports control of up to 16 433MHz radio frequency devices 5. Receive alarm push information from 433MHz PIR sensor, door and window alarm sensor 6. Control 433MHz radio frequency equipment via Wi-Fi or mobile network 7. Free iOS and Android mobile app eWeLink 8. Wide control range: Use 433MHZ radio frequency remote control to control 433MHZ radio frequency equipment, you must stay indoors. Sonoff RF bridge helps to switch signals, allowing you to control 433MHZ RF equipment anytime, anywhere 9. Indoor smoke concentration monitoring, if a fire occurs, RF Bridge will send an alarm message 10. Set the number of times to openclose the curtains regularly. 11. Quickly build a home security system, link with security equipment, and act as an alarm center 12. Anti-theft alarm push, once infrared changes are detected, RF Bridge will push alarm information to your smartphone 13. Power supply: USB 5V (not included) 14. Wireless standard: WiFi 802.11bgn, 433MHz 15. Security mechanism: WPA-PSKWPA2-PSK 16. Material: PC V0 17. Product size: 62x62x20mm