433Mhz WIFI and RF Relay Switch & 1 channel: add wifi and 433mhz remote control to your phone. your garage door fireplace, can be associated to RF as the channel, convenient for children and the elderly. With built-in 433Mhz RF receiver, supports 433Mhz RF fixed learning (433Mhz remote control included). Wide compatibility : Works with Tuya smart life app and eWelink app and Philips Hue Bridge and Alexa and SmartThings Hub and Echo Plus 2nd Generation (L9D29R), Echo Plus (ZE39KL), Echo Show 2nd Generation (DW84JL) and Echo Studio. No 3rd party apps required, just plug it in and ask « Alexa, discover » devices. ZigBee3.0 protocol, one-touch pairing: With ZigBee3.0 protocol, you can quickly add it to SONOFF ZBBridge or Tuya Zigbee gateways, pair it in any other way. simple click on the application. Three operating modes: can be used; for DIY garage door opener and other home appliances. USB 5V or AC/DC 7-32V working voltage, works as a wireless switch in self-locking mode, works as a smart button in momentary mode, 2CH and 4CH can work in interlock mode. ;finish the programming of the account at; countdown/loop timer for comfortable living and happy sharing. Included: 1 x Zigbee wireless module + 1 x remote control (433 MHz). Note: 1 channel / 2 channel module can compatible with Tuya and ewelink APP. 4 channels cannot compatible with Tuya and ewelink APP at the same time.