Sonoff 4CH Pro R3 Relay with RF – Advanced 4-Channel Smart Switch for Total Home Automation
The Sonoff 4CH Pro R3 is a versatile 4-gang Wi-Fi smart relay switch with RF control, designed to give you full command over multiple appliances and lighting systems. Whether you’re automating your home, office, or workshop, this device offers powerful multi-channel control, flexible operating modes, and seamless integration with popular smart platforms.
With support for dry contact mode, DIN rail mounting, and voice assistant compatibility, the Sonoff 4CH Pro R3 is the ideal solution for users seeking reliable, scalable, and intelligent automation.
Key Features
Four Independent Channels
- Control up to four devices separately
- Ideal for managing lights, fans, pumps, or motorized systems across different zones
Multiple Operating Modes
- Self-Locking Mode: Each relay operates independently
- Interlock Mode: Activating one relay turns off the others—perfect for motor control
- Inching Mode: Relay turns on briefly (0.5–3600 seconds) before auto-off—ideal for garage doors or gate triggers
- Dry Contact Mode: Use the relay as a signal switch without supplying power—great for retrofitting non-powered control systems
RF Remote Control
- Supports 433MHz RF remotes (sold separately)
- Control each relay wirelessly without opening the app
Smart App & Voice Control
- Manage devices remotely via the eWeLink app (iOS & Android)
- Compatible with Amazon Alexa and Google Home for hands-free operation
Scheduling & Automation
- Set timers, countdowns, and schedules for each channel
- Create smart scenes and link with other Sonoff or eWeLink-compatible devices
DIN Rail Mountable
- Includes rear bracket for DIN rail installation
- Clean and professional integration into electrical panels
Ideal Use Cases
- Automate lighting in multiple rooms or zones
- Control motorized curtains, garage doors, or irrigation systems
- Schedule appliances like coffee machines, fans, or water pumps
- Retrofit traditional switches with smart control using dry contact mode
- Link with sensors or other smart devices for advanced automation
Technical Specifications
| Specification | Details |
|---|---|
| Model | Sonoff 4CH Pro R3 |
| Input Voltage | AC 100–240V 50/60Hz or DC 9–23V |
| Max Load per Channel | 10A / 2200W |
| Total Load Capacity | 40A / 8800W |
| Wireless Protocol | WiFi IEEE 802.11 b/g/n (2.4GHz) |
| RF Frequency | 433MHz |
| Operating Modes | Self-locking, Interlock, Inching, Dry Contact |
| App Support | eWeLink (Android & iOS) |
| Voice Control | Alexa, Google Assistant |
| Mounting Type | DIN rail compatible |
| Dimensions | 145 × 90 × 34 mm |
| Operating Temp | –10°C to +40°C |
| Operating Humidity | 5%–95% RH (non-condensing) |
| Certifications | CE, FCC |
| Security Protocol | WPA/WPA2 |
Why Choose the Sonoff 4CH Pro R3?
The Sonoff 4CH Pro R3 is a powerhouse for smart automation. With four independent relays, flexible control modes, RF support, and full app and voice integration, it’s perfect for users who want to take their smart home setup to the next level. Whether you’re managing lighting, motors, or appliances, this device delivers precision, convenience, and scalability.
OTHERS
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