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Sonoff RF R3 - WiFi-RF Switch - ESP8266/ESP8285

Sonoff RF R3 - WiFi-RF Switch - ESP8266/ESP8285
Sonoff RF R3 - WiFi-RF Switch - ESP8266/ESP8285
  • Availabilty: Directly available from warehouse in Eindhoven
  • Model: SONOFFRFR3
  • SKU: 002146
Ex Tax: €9.50

The Sonoff RF R3 is a very handy WiFi and RF switch with timer for IoT applications. It can be controlled with Android or iOS with the eWeLink app or via the Sonoff RF remote controller (the RF remote is not included, but can be bought seperately). This WiFi switch is also compatible with Amazon Alexa, Google Assistant, IFTTT and Google Nest.
This R3 version also supports the REST API in DIY Mode and can therefore be connected to other home automation systems such as Home Assistant, OpenHAB and Domoticz.


  • Voltage range: 90-250V AC (50/60Hz)
  • Max. current: 10A
  • Max. power: 2200W
  • WiFi chip: ESP8266 or ESP8285 (new) (can be reprogrammed for own purposes)
  • Wireless standard: 802.11 b/g/n
  • Security mechanism: WPA-PSK/WPA2-PSK
  • Built-in RF receiver
  • RF frequency: 433MHz 
  • Dimensions: 91*43*25mm (l*b*h)
  • Working temperature: 0ºC-40ºC

See the following page for more information about this product: Sonoff RF R3 - WiFi-RF Switch - ESP8266/ESP8285

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Product FAQ

Some Sonoff devices have trouble connecting to a Wi-Fi network that runs on both 2.4GHz and 5GHz. However, there is a trick to work around this issue. The following steps can be followed for this:

  1. Create a mobile hotspot with a smartphone. Use exactly the same name and password as for the 2.4 GHz network of your modem/router.
  2. Turn off the modem/router completely.
  3. Pair the Sonoff device with the mobile hotspot of the smartphone set up in step 1.
  4. Turn off the mobile hotspot from step 1 after the Sonoff device is successfully paired.
  5. Turn the modem/router back on.

Additionally, some Sonoff Wi-Fi products require 802.11b support. Consult the manual of your router or access point to learn if 802.11b is supported and how to set it up.

This phenomenon is called 'ghost switching'. This can especially occur with Sonoff RF switches (like the RF R3, 4CH, T2 EU, etc.) when they are not linked to an RF trigger, such as a remote control, after installation. In this case, the device may inadvertently become paired with any nearby RF device that uses the same frequency. This problem can be solved by connecting the Sonoff RF switch with an RF device, such as the Sonoff 433MHz RF Remote, before it can connect with something else.

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