---
product_id: 402194015
title: "Sonoff 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa"
brand: "sonoff"
price: "57371CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/402194015-sonoff-4ch-pro-r3-wi-fi-smart-switch-4-channel
store_origin: SN
region: Senegal
---

# App access 4-channel control Voice command Sonoff 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa

**Brand:** sonoff
**Price:** 57371CFA
**Availability:** ✅ In Stock

## Summary

> 🔧 Transform your space with smart control!

## Quick Answers

- **What is this?** Sonoff 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa by sonoff
- **How much does it cost?** 57371CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/402194015-sonoff-4ch-pro-r3-wi-fi-smart-switch-4-channel)

## Best For

- sonoff enthusiasts

## Why This Product

- Trusted sonoff brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Access:** Quickly switch modes directly from the app.
- • **Versatile Modes:** Choose from self-locking, interlock, and inching modes.
- • **Empower Your Home:** Independently control 4 devices with ease.
- • **Smart Integration:** Seamlessly works with Alexa and Google Home.
- • **Convenient Mounting:** Easily mounted on a guide rail for out-of-reach devices.

## Overview

The SONOFF4CH Pro R3 is a cutting-edge 4-channel Wi-Fi smart switch designed for home automation. It allows users to independently control up to four devices, offering three powerful working modes: self-locking, interlock, and inching. With easy app access and compatibility with Alexa and Google Home, this smart switch is perfect for modern living. Its convenient din rail mounting makes it ideal for controlling devices that are out of reach.

## Description

Sonoff 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa

## Features

- [Independently control 4 devices] : It is the new 4-channel design which can make you remotely turn on/off 4 home appliances independently.
- [3 powerful working modes] : Turn on/off the 4 connected devices separately in self-locking mode. Turn on 1 device but turn off other 3 devices at the same time in interlock mode. Turn on the connected devices but automatically switch off after 0.5-3600s later in inching mode.
- [Quick to Access 3 Working Modes] : Compared with 4CHPROR2, you can access self-locking, interlock and inching mode on APP directly.
- [Easy to Out-of-Reach Devices]: Mounted on the guide rail, convenient to connect and control devices far from the switch
- [Works with Alexa & Google Home,IFTTT Supporting]: Link "EWeLink Smart Home Fan" skill. You can directly ask desertcart Echo/Echo Dot/desertcart Tap to turn on/off your Sonoff devices.Link "Smart We Link" on Google Home app, start to voice control your Sonoff devices on Google Home.(Only eWeLink advanced users have access to IFTTT, Costs 9.9USD and you will enjoy a full year of the privilege.)

## Product Details

- **Operation mode:** automatic
- **Current rating:** 10 Amps
- **Operating voltage:** 120 Volts
- **Contact type:** Normally Open
- **Connector type:** Clamp

## Images

![Sonoff 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa - Image 1](https://m.media-amazon.com/images/I/51NuapejOoL.jpg)

## Questions & Answers

**Q: i noticed this has ac and dc power inputs. can i operate 2 ac lights and 2 dc fans simultaneously**
A: Important to note that the outputs have NOTHING to do with the power supplied to the unit on the 4CH Pro and 4CH Pro R2. Supplied power is for the electronics only. You will need additional power source(s) - in addition to the power for the electronics -for the devices you are controlling via the relays/switches.

**Q: What are the differences between 4ch, 4ch pro, 4ch r2 and 4ch r2 pro?**
A: Just by looking at the pics and specs displayed it appears that the two 4CH units (WITHOUT PRO) use the same power source (90-220 AC) for the electronics AND the connected devices). Both the models with PRO use the supplied power ONLY for the electronics and you would supply power separately to the external devices controlled by the switches.

**Q: What is the amperage limit / ampacity of this unit?**
A: This is 10 amp /loaf with a wifi. & 433 MHz

**Q: How do you change modes between interlocking, self locking and inching?**
A: Hello that is done with the DIP switches. I don't have the manual in front of me but if you go to the webpage for the device you can get a PDF version. 

If I remember correctly it was better than the one on the box and clearly showed how to set them.

## Frequently Bought Together

- SONOFF 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Works with Alexa(1 Pack)
- SONOFF BASICR2 WiFi Switch 3-Pack Wireless Remote Control Electrical for Household Appliances,Compatible with Alexa DIY Your Home Via iPhone Android App

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**Shop now:** [https://www.desertcart.sn/products/402194015-sonoff-4ch-pro-r3-wi-fi-smart-switch-4-channel](https://www.desertcart.sn/products/402194015-sonoff-4ch-pro-r3-wi-fi-smart-switch-4-channel)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-27*