Sonoff 4CH Pro R2 Smart Wifi Switch 4 Gang Light Switch 433MHz RF Remote Wifi Relay Ewelink APP With Alexa Google home-in Home Automation Modules from Consumer Electronics on AliExpress - 11.11_Double 11_Singles' Day

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Sonoff 4CH Pro R2 Smart Wifi Switch 4 Gang Light Switch 433MHz RF Remote Wifi Relay Ewelink APP With Alexa Google home Details & Specification :

Item Specifications
Brand Name SONOFF
Model Number Sonoff 4CH Pro R2
Camera Equipped No
State of Assembly Ready-to-Go
Compatibility All Compatible
Item Type Wifi Relay Switch/Wifi Light Switch 4Channel
Control Method Wifi App Switch, 433MHz RF Remote control Switch
Channel 4 Channel
Features interlock/self-locking/inching mode
Power Supply 90-250v AC(50/60Hz)
Max Current 10A/gang
Max Wattage 2200W/gang
Dimensions 145*90*40(mm) (L*W*H)
Wifi Standard 2.4GHZ, 802.11 b/g/n
Certification CE, RoHS, FCC

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Sonoff 4CH Pro R2 Smart WiFi Switch with 433 RF Control Function

Ewelink APP Work with Alexa & Google Home


Sonoff 4CH Pro R2 is WiFi relay switche with 4 channel.

You can turn on/off each channel by Ewelink app on phone anytime anywhere. You can also set timmer or schedul to turn on/off automaticlly. The timmers and schedules can run themselves even when the network is unavailable.


Sonoff 4CH Pro R2 also support 433 RF remote control, after paired to 433 remote control, you can turn on/off each channel by 433 remote control indoor. Normally the effective distance is 20 meters. It also support Alexa and Google Home, you can turn on/off the switch by voice through Alexa or Google Home.


Sonoff 4CH Pro R2 also supports 3 working modes: self-locking/ inter-locking /inching mode.

In self-locking mode: you can turn on/off the 4 channels independently.

In inter-locking mode: you can only turn on 1 channel every time, when you turn on 1 channel, the other 3 channels will be turned off.

In inching mode: you can turn on the channel for 1 to 16 seconds, after the time, it turn off automaticlly.



Difference between 4CH R2 and 4CH Pro R2

4CH Pro R2 is a upgrade version of 4Ch R2.

4CH R2 don't support 433 RF remote control, and only support self-locking mode, don't support inter-locking and inching mode.

4CH Pro R2 support 433 RF remote control, and can support 3 working modes: self-locking/ inter-locking /inching mode.



【1】The 433 Remote Control will be sent out without battery due to transportation limits.

【2】For 4CH Pro R2, the defult mode is interlock mode. In this mode, you can only turn on 1 channel at one time.

         You can change the mode into self-locking/inching mode according to User Guide.




  • Voltage Range: 90-250V AC(50/60Hz) / 5-24V DC
  • Max Current: 10A/gang
  • Max Power: 2200W/gang
  • Wireless Frequency: WiFi 2.4GHz
  • Wireless Standard: 802.11 b/g/n & 433MHz
  • Security Mechanism: WPA-PSK/WPA2-PSK
  • Enclosure Material: Fire-retardant ABS V0
  • Gang: 4 gang
  • Dimension:145*90*40 (mm)
  • Operating Temperature(recommended): 0℃-40℃
  • Operating Humidity: 5%-90%RH, Non-condensing
  • Certification: CE/FCC/RoHS




    In self-locking mode, you can turn on/off the 4 connected devices independently. For example,

    if you turn on CH1, connected device keeps on. If you turn off CH2, connected device keeps off.




    In interlock mode, you can turn on 1 device every time, and turn off other devices at the same time.

    For example, if you have turned on CH2, then when you turn on CH3, CH2 will be auto-turned off

    at the same time.


    In inching mode, you can turn on the connected devices for 1-16s. For example,

    you can turn on CH1 connected device for 1s, then auto-off.





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