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

Price: $35.99 - $29.90
(as of Jun 21, 2026 12:11:03 UTC – Details)
Buy On Amazon

Product description

Voice Control

eWeLink APP Pairing Instruction 1. Download “eWeLink” app in APP Store for iOS or in Google play for Android. 2. Cut off the power before installing the device. Then power it up after completing the installation. 3.After powering on, the device will enter the quick pairing mode (Touch) during the first use. The Wi-Fi LED indicator changes in a cycle of two short and one long flash and release. 4. Tap “+” and select “Quick Pairing”, then operate following the prompt on the app. 5. It will auto-search and connect the device. 6. Name the device to complete.

Works with Amazon Alexa & Google Home Assistant

1. Tap “eWeLink Smart Home”on Alexa App, or “Smart We Link” on Google Home App.

2. Enter your eWeLink account and log in.

3. All the devices supported by voice control under your account display on Alexa App or Google Home App.

4. Name the devices to complete.

5. Now, control the connected devices with voice commands.

“Alexa, turn on the light.”

“Hey Google, turn off the bedroom light.”

……

Quick to Access 3 Working Modes

Compared with 4CHR2 / 4CHPROR2, you can access self-locking, interlock and inching mode on APP directly.

Self-locking Mode

Turn on/off 4 connected devices independently.

Interlock Mode

Turn on 1 device every time, and turn off other devices at the same time.

Inching Mode

Turn on 1 device and it will automatically turn off after 0.5-3600s.

Share Control

Share the control permission of devices to other accounts to control together.

Set Schedule

Support scheduling a timer to make devices automatically start and stop to work.

Customize Smart Scenes

You can create smart scenes in order that one SONOFF device can trigger on/off another one or gather multiple devices into one group and tap to run them together.

Security Comes Before Everything

The durable flame-retardant PC shell provides the maximum safety for connected devices in use.

Power On state

You can set the power-on state to: ON/OFF/KEEP. When the device is powered back on,the switch status of the device will be determined by the power-on state you set.

433MHz RF Control

With a 433.92MHz RF receiver module built-in, it can be controlled by the 433MHz remote controller(not included).

Add to Cart

Customer Reviews

4.5 out of 5 stars 314

4.5 out of 5 stars 133

4.4 out of 5 stars 1,449

4.4 out of 5 stars 99

4.2 out of 5 stars 778

Price

$29.90$29.90
— no data

— no data

— no data

— no data

433MHz remote control

✓
no data
no data
no data
no data

Dry contact

✓
no data
no data
no data
no data

AC input

✓

✓

✓

✓

✓

DC input

✓
no data
no data

✓

✓

3-month operation records

✓

✓
no data
no data
no data

interlock mode
APP APP no data
no data
no data

inching mode
APP APP APP APP APP

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 1-16s later in inching mode.
2 remote control methods for your choose : you can turn on/off the connected lights/appliances via WiFi or 433MHz RF Remote control.
Set 8 time schedules for automatic control : It can create 8 enabled single/repeat/ countdown timers to automatically turn on/off devices at the specified time. And the timers can run themselves even the network is unavailable.
Works with Alexa & Google Home,IFTTT Supporting: Link “EWeLink Smart Home Fan” skill. You can directly ask Amazon Echo/Echo Dot/Amazon 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.