Sonoff 4CH R3 Smart Switch WiFi

Product Introduction

The Sonoff 4CH R3 Smart Switch WiFi is a powerful four-channel smart relay designed to bring intelligent automation to multiple electrical circuits from a single device. With independent control of up to four connected appliances or lighting circuits, the 4CH R3 provides flexible automation for homes, offices, and smart installations.

Integrated with the eWeLink, the switch allows users to remotely control connected devices, create automation schedules, and build smart scenes directly from their smartphone. The device can be installed inside electrical panels or mounted on DIN rails, making it ideal for advanced smart home setups and DIY automation projects.

Key Features

Four Independent Control Channels

Control up to four separate electrical circuits from a single smart relay module, allowing centralized automation of multiple devices.

Remote Smartphone Control

Turn appliances on or off remotely through the eWeLink mobile app from anywhere with internet access.

Flexible Automation Modes

Supports multiple operating modes including self-locking, interlock, and inching, enabling automation of lights, motors, gates, and other equipment.

Automation Scheduling & Timers

Create schedules, countdown timers, and automation routines to manage devices automatically.

Manual Override Buttons

Physical buttons on the unit allow manual control of each channel directly from the device.

Smart Scene Integration

Combine multiple Sonoff devices into smart scenes such as “Home Mode”, “Away Mode”, or automated lighting routines.

Reliable WiFi Connectivity

Connects directly to a 2.4 GHz WiFi network for stable smart home control.

Smart Home Integration

The Sonoff 4CH R3 integrates with the eWeLink smart home platform, enabling centralized control and automation of compatible smart devices.

The device also supports voice control through:

• Amazon Alexa
• Google Assistant

Through smart scenes, the switch can interact with sensors, smart plugs, and other Sonoff devices to create advanced home automation routines.

Technical Specifications

Product Type: 4-Channel Smart Relay Switch
Model: 4CH R3
Connectivity: WiFi 2.4 GHz (IEEE 802.11 b/g/n)
Input Voltage: 100–240V AC, 50/60Hz
Maximum Load: 10A per channel
Total Load Capacity: Up to 40A combined
Number of Channels: 4 independent relays
Control Modes: Self-locking, interlock, inching
Material: Flame-retardant ABS housing
Installation: DIN-rail mounting or enclosure installation
Operating Temperature: −10 °C to 40 °C

What’s in the Box

Sonoff 4CH R3 Smart Switch WiFi
Mounting hardware
User manual