SONOFF 4CHPROR3 4-Gang Wi-Fi Smart Switch with RF Control
SONOFF 4CHPROR3 4-Gang Wi-Fi Smart Switch with RF Control
Comprehensive Control and Boundless Flexibility
Elevate the level of automation in your home or facility with the Sonoff 4CHPROR3 switch. Designed to give you full control over four independent electrical devices or circuits from a single location, with support for radio frequencies and multiple power options to suit professional projects.
Three Intelligent Working Modes
Choose between self-locking mode for independent control, interlock mode to ensure only one device runs at a time (ideal for motors), or inching mode for automatic shut-off after a specified duration.
Superior Power Flexibility
Unlike the standard version, the PRO version supports operation on AC (100-240V) or DC (9-23V) power, making it the perfect choice for a wide range of systems.
Multiple Control Options
Control your devices via the eWeLink app from anywhere, or using a 433MHz RF remote control, in addition to full compatibility with smart voice commands.
Integrated Engineering Design
It comes with the ability to be mounted directly on a DIN rail, allowing for neat and safe installation within the main electrical distribution boards of a smart home.
Technical Specifications
| Model | 4CHPROR3 |
| Number of Channels (Gangs) | 4 independent channels |
| Input Voltage Range | AC: 100-240V AC (50/60Hz) | DC: 9-23V DC |
| Max Load per Channel | 10A / 2200W |
| Max Total Load | 40A / 8800W |
| Wireless Frequency | Wi-Fi 2.4GHz + RF 433.92MHz |
| Wireless Standard | IEEE 802.11 b/g/n |
| Material | Flame-retardant Polycarbonate (PC V0) |
| Operating Environment | Temperature: -10 to 40°C | Humidity: 5% to 95% |
| Dimensions | 145 × 90 × 34 mm |
| Compatible App | eWeLink App (available for iOS and Android) |
Setup and Installation Notes
- Please note that the maximum total load is 40A; ensure that connected devices do not exceed this limit to guarantee safety.
- When using the switch to control curtain motors or garage doors, it is recommended to enable "Interlock" mode from the app to prevent the motor from running in two opposite directions simultaneously.
- This version (PRO) contains dry contacts with an NO/NC/COM system, making it safe for controlling circuits that do not require direct voltage injection.
- It is recommended to install the device inside the electrical panel by mounting it on a DIN rail, and connection should be performed by a qualified electrician.
