Sonoff 4CH Pro R3 - Wi-Fi-RF Switch - ESP8266/ESP8285

Availability: Directly available from warehouse in Eindhoven
SKU: 002128

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€37.50

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Description
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The Sonoff 4CH Pro is a very handy 4-channel Wi-Fi 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 Wi-Fi switch is also compatible with Amazon Alexa, Google Assistant, IFTTT and Google Nest. This module also has the option to mount it on a DIN rail.

Specifications:

Input voltage: 90-250V AC (50/60Hz) or 9-23V DC
Max. voltage per channel: 250V AC (50/60Hz) or 30V DC
Max. current per channel: 10A
Max. switching power per channel: 2200W
Wi-Fi chip: ESP8266 or ESP8285 (new)
Wireless standard: 802.11 b/g/n
Security mechanism: WPA-PSK/WPA2-PSK
Built-in RF receiver
RF frequency: 433MHz
Dimensions: 145*90*40mm (l*w*h)
Working temperature: 0ºC-40ºC

See the following page for more information: Manufacturer page

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Product FAQ

My Sonoff device will not connect to the Wi-Fi network.

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:

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.
Turn off the modem/router completely.
Pair the Sonoff device with the mobile hotspot of the smartphone set up in step 1.
Turn off the mobile hotspot from step 1 after the Sonoff device is successfully paired.
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.

The Sonoff RF switch seems to switch on its own. Is there a solution for this?

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.