Faq Sections

How do I know if two RF 433MHz products are compatible?

Check the accessories listed under the products. If you can see the other product, the two products are compatible.

You can also compare the specifications for frequence, modulation and coding. They must match, e.g. 433MHz, ASK and Fixed.

Our shop
Where do you deliver and how quickly?

We deliver in all of EU from our store in Spain. Delivery times are 3-5 days.

Do you sell products with the standard Sonoff EweLink software?

No we do not sell Sonoff products with the EweLink software.

What is ESPurna?

ESPurna ("spark" in Catalan) is a custom firmware for ESP8285/ESP8266 based smart switches, lights and sensors.

It supports a number of SONOFF devices and feaures e.g. MQTT and Home Assistant integration.

You may find more information on github.

Beware that it requires effort and IT skills to configure and integrate ESPurna devices with home automation systems. This is not products for novices.

What is Sonoff-Tasmota?

Sonoff-Tasmota is an alternative open source firmware for ESP8266 based devices such as iTead SonoffAllterco Shelly and many, many more.

It provides local control, MQTT and integration with home automation systems such as openHAB, Home Assistant and Domoticz.

You may find more information on the official GitHub page

You may also find relevant information on Tasmota at

If you are starting out and wish to have a relatively easy experience in developing your projects, then try the build-in web interface.

4 Channel Switch

Example of Tasmota Web Interface
the Sonoff 4 Channel Pro MQTT Switch

hello, I got your sonoff basic with tasmota. How can I rest it to factory defaults ? thank you Nicola


On delivery it is already in factory reset state.

If you want to factory reset afterwords, check this link Tasmota Button Usage

Long press

When held continuously for 40 seconds (Configurable with SetOption32, value is 10x the configured hold time) Tasmota will reset to firmware defaults and restart.

Initial configuration of the Sonoff-Tasmota devices
  1. Power up the sonoff device. The device will create a WIFI access point with the name sonoff-xxx, where xxx is some number
  2. On your computer, change your wifi network to sonoff-xxxx and browse to
  3. Enter the details of your WIFI network and click save.
  4. The device will restart and get an IP address from your the DHCP server of your network.
  5. On your computer, change your wifi network back to your wifi network
  6. Use the Tasmota Device Locator or your router to find the IP address of the device.
  7. Browse to the IP address of the RF bridge.
  8. Go into "Configuration"
  9. Go into "Configure Module"
  10. Select Module Type, according to note below and press "Save". Now the RF Bridge is configured as such.
  11. To get to the main menu of the RF Bridge, browse to the IP address of the RF bridge.
  12. In "Configuration" it is now possible to specify MQTT and other parameters

Note: Values for configuration of module type

  • RF Switch: Sonoff RF 2
  • Temperature/Humidity monitor: Sonoff TH 4
  • Power Monitor: Sonoff Pow 6
  • S20 Smart switch: Sonoff S2x 8
  • RF Bridge: Sonoff Bridge 25
  • Smart Bulb: AiLight 27

For the temperature/humidity monitor, you also need to specify the sensor type, e.g. AM2301.

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Using the TWS I12

1*Tap: Start/Stop music, Answer/Hangup call

2*Tap: Left: Increase volume, Right: Decrease volume

3*Tap: Left: Previous, Right: Next

Long press 3 seconds: Start assistant

Reject call: Press 1 second