How It Works

1
Mount on DIN rail
Cut power at the main, snap the 4CHPRO onto the DIN rail in your electrical panel.
2
Wire the 4 channels
Connect L + N to the input side. Each of the 4 channels has its own L-out terminal - wire to whichever load you want to control.
3
Pair in eWeLink
Open eWeLink → "Add device" → scan the QR. Pairs in 30 seconds. Each channel becomes its own toggle.
4
Set modes per channel
Pick Self-locking for lights, Interlock for paired pumps, Inching for gates. Pair the included RF remote if you want offline control.
5.0 from 553 verified Google & Facebook reviews - real orders across Lebanon Read reviews

Is This Right for Me?

Channels: 4 independent relays
Max Load per channel: 10A (≈2200W on 220V)
Voltage: 100-240V AC, 50/60 Hz
Modes: Self-locking, Interlock, Inching
Dry Contact: Yes (signal-line control)
Wi-Fi: 2.4 GHz only
RF: 433 MHz remote pairing
Mounting: DIN rail

Product Details

Sonoff 4CHPRO R3 – 4-Channel Smart Switch

The Sonoff 4CHPRO R3 lets you control up to 4 devices or circuits independently from one unit. Install it in your electrical panel, and you can turn each connected device on or off from your phone using the eWeLink app – whether it’s lights, a water pump, fans, or appliances.

It also supports RF 433MHz (radio Frequency remote control – works without Wi-Fi or internet, like a TV remote) remote control, so you can operate it without internet using a Sonoff RF Remote.

Key Features:

  • 4 Independent Channels: Control 4 devices separately – turn one on while keeping the others off.
  • Multiple Modes: Self-locking (normal on/off), Interlock (turn one on and the other 3 off automatically), and Inching (turns on for a set time then turns off – great for garage doors).
  • Dry Contact Support: Works as a simple smart switch to control signal lines – ideal for gate openers, alarms, and boilers.
  • Mounts on DIN rail: Designed to be installed inside your electrical panel.
  • RF Remote Control: Use a 433MHz remote to control devices without internet.
  • Voice Control: Works with Google Assistant and Alexa.

💡 Pro Tip: Use Interlock mode if you have two water tanks and want only one pump running at a time – it automatically shuts off the other when you activate one.

What You Get

4 channels, one unit
Control 4 separate circuits or devices independently - gate, pump, lights, garage door - from one DIN-rail unit.
Interlock mode
Two pumps that should never run together? Interlock turns one off automatically when the other goes on.
Inching mode
Timed pulse activation - perfect for gates and garage doors. Tap the app, the relay fires for 1 second.
RF 433 remote works without Wi-Fi
Pair a standard 433MHz remote and control all 4 channels even when the router is down.
Voice control
Each channel gets its own name in Alexa or Google - "Alexa, turn on the well pump".

A Closer Look

Sonoff 4CHPROR3

Make Your Dumb Home into Smart with the Sonoff 4CHPROR3 4-gang Wi-Fi Smart Switch with RF Control.

Sonoff 4CHPROR3
Sonoff 4CHPRO R3 Smart Switch

Common Use Cases (1)

Real scenarios Lebanese customers use this product for. Don't see yours? Message us and we'll tell you if it fits.

4-Light Switch
control four lights at once from one smart switch - or from your phone.
See 1 product

Works With

Amazon Alexa
Works
Google Assistant
Works
Sonoff NSPanel (as scene trigger)
Works
433 MHz RF remotes
Works

Control with the eWeLink app

eWeLink app icon
eWeLink
Set up your Sonoff 4CHPRO R3 Smart Switch in minutes - voice control, scenes, automations, away mode.
App Store Google Play
View app

What's in the Box

1× Sonoff 4CHPRO R3 smart switch
Installation accessories
User manual (English)

Delivery & Pickup

Standard Delivery
All Lebanon governorates - Greater Beirut usually next day; Tripoli, Jbeil, Saida, Tyre, Zahle, Akkar and the rest within 2–4 working days.
4 $ · Free over 50 $
Express Delivery
Faster shipping - usually within 24 hours of order confirmation (Greater Beirut & Metn). Same-day not guaranteed.
6 $ flat
Pickup - Dekwaneh
Collect from our Dekwaneh store. Weekdays 10am–5pm, Sat 10am–1pm.
3 $ · Free over 30 $

Warranty & Support

6-month Local Warranty
Covers defects in materials & workmanship. Handled here in Lebanon.
WhatsApp Support - Always On
Can't set it up? Message us. We reply within minutes, not days.
14-day Exchange - Unopened Items
The item must be unopened and in its original packaging. Exchange it for a product of equal or higher value - we do not give cash refunds. Opened items are covered by the warranty if there is a factory defect.
Free Setup Call
If you get stuck, we'll walk you through the setup on a free WhatsApp call.

Customer Reviews (1)

5.0
★★★★★
1 review
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Smartio customer
May 2026
★★★★★
✓ Verified Purchase

Frequently Asked Questions

What can I actually control with the 4 channels? ›
Anything that needs an on/off relay. Common Lebanese setups: well pump + cistern pump + garden lights + gate. Or: 4 separate room lights from the panel. Or: heater + AC + water pump + outdoor light. Each channel works independently.
What's Interlock mode for? ›
When you have two devices that should never run at the same time - like a main pump and a backup pump, or solar feed and grid feed. Interlock turns one off automatically the moment you turn the other on.
What's Inching mode for? ›
Timed-pulse activation. Tap the app, the relay closes for 1 second (or any duration you set), then opens again. Perfect for gate motors and garage door openers that need a pulse signal.
Does it work without Wi-Fi? ›
Yes - the included 433MHz RF receiver pairs with a standard RF remote. Press the remote and the relay fires, no internet needed. Useful for outdoor gate setups or backup control during router downtime.
Do I need an electrician to install it? ›
It sits in the electrical panel and switches mains power. We strongly recommend an electrician unless you've wired panels before. Installation itself is straightforward - wire L+N to power, then each channel's L-out to the load.
Will it work with my existing eWeLink account? ›
Yes - adds the same way as any other Sonoff device. Once paired, the 4 channels show up as one device with 4 toggles in eWeLink, and 4 separate Alexa/Google entities.
What about EDL cuts? ›
Set Power-on State per channel to "Last State" - when EDL returns, each channel goes back to where it was. RF remote keeps working during the outage (assuming the device has power from generator/inverter).
Can it work as a Zigbee repeater? ›
No - this is a Wi-Fi + RF device, not Zigbee. For Zigbee mesh repeating, use Sonoff Zigbee plugs or the Bridge Pro.

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