Sonoff 4CH Pro R3 Smart Switch WiFi and RF

Product Introduction

The Sonoff 4CH Pro R3 Smart Switch WiFi and RF is a powerful four-channel smart relay designed for advanced smart home automation and multi-device control. With independent switching of up to four connected circuits, the device enables centralized automation for lighting systems, appliances, motors, and other electrical equipment.

The switch supports both WiFi and 433 MHz RF remote control, providing flexible control through the eWeLink smartphone app, voice assistants, or compatible RF remotes. This dual-control capability makes it ideal for installations where both smart automation and traditional remote switching are required.

Designed for versatility, the 4CH Pro R3 supports AC and DC power inputs and can be mounted on a DIN rail or installed within electrical enclosures, making it suitable for both residential and professional smart automation projects.

Key Features

Four Independent Control Channels

Control up to four separate devices or circuits independently from a single smart relay module.

WiFi & RF Dual Control

Operate the switch via the eWeLink app, voice commands, or compatible 433 MHz RF remote controls for flexible control options.

Flexible Operating Modes

Supports three working modes including self-locking, interlock, and inching, enabling use with lighting systems, motors, gates, and automation equipment.

AC and DC Power Support

Works with 100–240 V AC or 9–23 V DC, providing compatibility with a wide range of electrical systems.

Remote Smartphone Control

Switch connected devices on or off from anywhere using the eWeLink mobile application.

Manual Control Buttons

Integrated buttons on the unit allow manual operation of each channel directly on the device.

Automation Scheduling

Create timers, countdowns, and automation scenes for intelligent device control.

Smart Home Integration

The Sonoff 4CH Pro R3 integrates seamlessly with the eWeLink smart home ecosystem, enabling centralized automation and device control.

It supports voice assistant compatibility with:

• Amazon Alexa
• Google Assistant

Through automation scenes, the switch can interact with other smart home devices to trigger routines such as lighting automation, gate control, or appliance scheduling.

Technical Specifications

Product Type: 4-Channel Smart Relay Switch
Model: 4CHPROR3
Connectivity: WiFi 2.4 GHz + 433 MHz RF
Input Voltage: 100–240 V AC or 9–23 V DC
Maximum Load: 10 A per channel
Total Load Capacity: Up to 40 A combined
Control Modes: Self-locking, interlock, inching
Wireless Standard: IEEE 802.11 b/g/n
Material: Flame-retardant ABS housing
Installation: DIN rail mounting or enclosure installation
Dimensions: Approx. 145 × 90 × 34 mm

What’s in the Box

Sonoff 4CH Pro R3 Smart Switch WiFi and RF
Mounting hardware
User manual