Description
The SONOFF 4CHPROR3 is a professional 4-channel smart Wi-Fi relay switch designed for advanced smart automation, industrial control systems, and multi-device remote management. Featuring 4 independent relay outputs with support for 433MHz RF remote control, the device allows users to remotely control lighting, gates, motors, garage doors, pumps, and electrical equipment through the eWeLink app or compatible RF remotes.
Built for flexible automation applications, the 4CHPROR3 supports three working modes including self-locking, interlock, and inching mode, making it suitable for motor control, access systems, smart lighting, and automation projects.
Unlike the standard 4CHR3 version, the 4CHPROR3 includes RF functionality and dry contact support, allowing wider compatibility with external control systems and RF accessories. The device also supports both AC and DC input power for more installation flexibility.
Its DIN rail mounting design provides clean professional installation inside electrical panels, automation cabinets, workshops, industrial environments, and smart home systems.
Technical Specifications
| Specification |
Details |
| Product Model |
SONOFF 4CHPROR3 |
| Product Type |
Smart Wi-Fi 4-Channel Relay Switch |
| Number of Channels |
4 Channels |
| Rated Current |
10A/Gang |
| Max Total Load |
40A |
| Max Power |
2200W/Gang |
| Connectivity |
Wi-Fi IEEE 802.11 b/g/n 2.4GHz |
| RF Support |
433.92MHz RF |
| RF Remote Control |
Supported |
| Dry Contact Support |
Supported |
| Working Modes |
Self-Locking / Interlock / Inching |
| Input Voltage |
100-240V AC / 9-23V DC |
| App Support |
eWeLink App |
| Remote Control |
Supported |
| Scheduling & Timers |
Supported |
| Smart Scene Automation |
Supported |
| Voice Assistants |
Amazon Alexa, Google Assistant |
| Installation Type |
DIN Rail Mount |
| Material |
PC V0 |
| Operating Temperature |
-10°C to 40°C |
| Dimensions |
145 × 90 × 34 mm |
| Color |
White |
Why Choose This Product
- 4 independent smart relay control channels
- Supports up to 10A per channel and 40A total load
- Built-in 433MHz RF remote control support
- Supports dry contact control applications
- Flexible self-locking, interlock, and inching modes
- Compatible with AC and DC power input
- Professional DIN rail installation design
- Ideal for gates, motors, lighting, pumps, and industrial automation
- Remote control and automation through the eWeLink app
- Supports smart scenes, timers, and voice assistant control
