Introduction
The SONOFF EF2G and EF3G are wall switch frames designed as part of the SONOFF Fusion Series. These frames are specifically adapted for SONOFF wall switch enclosures, providing a solution for installing multiple switch enclosures side-by-side in standard junction boxes without space congestion or misalignment. The EF2G is a 2-gang frame, and the EF3G is a 3-gang frame.


Setup and Installation
The SONOFF EF2G and EF3G frames are designed for easy integration with compatible SONOFF wall switch enclosures and standard junction boxes. They support both horizontal and vertical installation.
Compatibility
- Compatible with standard 2-gang and 3-gang junction boxes.
- Designed for use with SONOFF Fusion Series wall switch enclosures, including models like Orb-MW1, Orb-ZBW1L, Orb-RBS, E1GS, and E1GSL.
Installation Steps
- Ensure power is disconnected at the circuit breaker before beginning any electrical work.
- Prepare the standard 2-gang or 3-gang junction box in your wall. Refer to the "Applicable Mounting Box" diagram for typical dimensions.
- Insert the compatible SONOFF wall switch enclosures into the junction box.
- Align the EF2G or EF3G frame over the installed enclosures. The frame is designed to ensure seamless side-by-side installation without gaps or misalignment.
- Secure the frame and enclosures using appropriate screws, typically through the mounting holes provided on the enclosures and frame.
- Verify that the frame is securely attached and flush with the wall surface.
- Restore power to the circuit.




Operation
The SONOFF EF2G and EF3G frames are passive components designed to house and aesthetically finish SONOFF wall switch enclosures. They do not have active operational functions. Once installed, their primary role is to provide a clean, integrated look for your smart wall switches and ensure proper fit within standard junction boxes.
For operation of the actual smart switches or devices housed within the frame, please refer to the specific user manual for your SONOFF wall switch enclosure (e.g., Orb-MW1, Orb-ZBW1L, Orb-RBS, E1GS, E1GSL).
Maintenance
To maintain the appearance and integrity of your SONOFF Wall Switch Frame:
- Clean the surface with a soft, dry, or slightly damp cloth.
- Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the PC material.
- Ensure no liquids seep into the electrical components of the switches housed within the frame.
Troubleshooting
As a passive frame, troubleshooting is primarily related to installation and fit.
| Issue | Possible Cause | Solution |
|---|---|---|
| Frame does not fit flush against the wall. | Junction box not properly recessed or enclosures not fully seated. | Ensure the junction box is correctly installed and the SONOFF wall switch enclosures are fully pushed into the box before attaching the frame. Check for any obstructions. |
| Gaps or misalignment between frames (if installing multiple). | Incorrect alignment during installation or non-standard junction box. | Re-align the frames carefully. Ensure you are using standard 2-gang or 3-gang junction boxes as specified. The frames are designed for seamless side-by-side installation. |
| Difficulty securing the frame. | Screws not engaging properly or incorrect screw length. | Use the appropriate screws provided with your SONOFF wall switch enclosures. Ensure screws are long enough to engage the junction box threads but not so long as to damage internal wiring. |
Specifications
| Attribute | Detail |
|---|---|
| Brand Name | SONOFF |
| Model Number | EF2G / EF3G |
| Gang | EF2G: 2-Gang, EF3G: 3-Gang |
| Casing Material | PC (Polycarbonate) |
| Color | White |
| Dimension | EF2G: 157mm x 86mm EF3G: 228mm x 86mm |
| Net Weight | EF2G: 35g EF3G: 48.3g |
| Compatible Product | Orb-MW1, Orb-ZBW1L, Orb-RBS, E1GS, E1GSL (SONOFF Fusion Series Wall Switch Enclosures) |
| Communication Method | Wi-Fi (Pertains to compatible smart switch modules, not the frame itself) |
| Origin | Mainland China |

User Tips
- Always ensure the power is off before installing or removing the frame or any associated electrical components.
- When installing multiple frames side-by-side, take care to align them perfectly to achieve the intended seamless appearance.
- For optimal aesthetic integration, consider the orientation (horizontal or vertical) before final installation.
- If you encounter any resistance during installation, do not force the frame. Recheck the alignment of the junction box and the switch enclosures.
Warranty and Support
This product is manufactured by SONOFF. For any product-related inquiries, technical support, or warranty information, please contact SONOFF customer service directly or visit their official website. Specific warranty terms may vary by region and retailer.





