1. Introduction
The SONOFF MINIR3 and S-MATE are components of an advanced smart switch solution designed for home automation. The MINIR3 is a 16A Wi-Fi smart switch, while the S-MATE is a switch mate that enables control without a neutral wire, making it ideal for modifying existing switches into smart scene controllers. This system allows for remote control via the eWeLink app, voice commands through platforms like Alexa, Google Home, and Alice, and supports the creation of smart scenes to automate your appliances.
This manual provides detailed instructions for the installation, operation, and maintenance of your SONOFF MINIR3 and S-MATE devices.
Figure 1: SONOFF MINI R3 and S-MATE Smart Switch components.
2. Important Safety Information
WARNING: Electrical shock hazard. Installation should be performed by a qualified electrician in accordance with local electrical codes.
- Always disconnect power at the circuit breaker before installing or servicing the device.
- Ensure the device is installed in a dry environment, away from water or moisture.
- Do not exceed the maximum load current of 16A for the MINIR3.
- The S-MATE uses a CR2032 button cell battery. Keep batteries out of reach of children.
- This device is designed for indoor use only.
- Ensure all connections are secure and properly insulated.
Both MINIR3 and S-MATE are TÜV certified and FCC/CE compliant, ensuring high quality and safety standards.
Figure 2: Safety certifications for MINI R3 and S-MATE.
3. Package Contents
Please check the package for the following items:
- 1 x SONOFF MINIR3 Smart Switch
- 1 x SONOFF S-MATE Switch Mate
- User Manual (this document)
Note: The S-MATE requires one CR2032 button cell battery, which may not be included in all packages. Please check your specific product variant.
4. Specifications
4.1. SONOFF MINIR3
| Feature | Specification |
|---|---|
| Model | MINIR3 |
| Input/Output | 100-240V~50/60Hz 16A Max |
| Max. Load | 3500W |
| Wi-Fi | IEEE 802.11 b/g/n 2.4GHz |
| Shell Material | PC V0 |
| Dimension | 54x45x24mm |
| eWeLink Remote Receiving Distance | Up to 50M in Open Space |
| Operating Systems | Android & iOS |
| Certification | CE, FCC |
4.2. SONOFF S-MATE
| Feature | Specification |
|---|---|
| Model | S-MATE |
| Working Temperature | -10℃~40℃ |
| Power Supply | 3V button cell x1 |
| Battery Model | CR2032 (Not Include) |
| Shell Material | PC V0 |
| Dimension | 51x44.5x24mm |
| eWeLink Remote Working Distance | Up to 50M in Open Space |
Figure 3: Physical dimensions and key specifications of MINI R3 and S-MATE.
5. Setup and Installation
Before proceeding with installation, ensure you have upgraded both the firmware of your devices and the eWeLink APP to the latest version (4.18 or higher).
5.1. Quick Start Guide
- Download eWeLink App: Search for "eWeLink" in your app store (Android & iOS) and download the application.
- Wire and Power On: Follow the wiring diagrams provided below to connect your MINIR3 and S-MATE. Once wired, power on the devices.
- Bluetooth Pairing: Open the eWeLink app, tap "+" and select "Bluetooth pairing". Follow the on-screen prompts in the app to pair your devices.
- Add S-MATE to MINIR3: Within the eWeLink app, add the S-MATE to your MINIR3 as an eWeLink-Remote sub-device.
Figure 4: Visual quick start guide for device setup.
5.2. Wiring Diagrams
The MINIR3 and S-MATE offer a "No Neutral Wire" solution, allowing you to retain existing switches and install the devices in switch boxes without a neutral line. The S-MATE is compatible with various switch types, including pulse and rocker switches.
Figure 5: "No Neutral Wire" solution concept with MINI R3 and S-MATE.
Figure 6: S-MATE compatibility with existing switch types.
5.2.1. Wiring for Single MINI R3
Figure 7: Wiring diagram for a single MINI R3 (top left) and for one MINI R3 with multiple S-MATE devices (bottom).
For a single MINI R3 installation, connect the Live (L) and Neutral (N) wires to the input terminals. Connect the load (e.g., light bulb) to the output terminals (Lout and N).
5.2.2. Wiring for S-MATE with MINI R3
Figure 8: Wiring diagram for one S-MATE controlling three MINI R3 units.
When using S-MATE with MINI R3, the S-MATE connects to your existing wall switch and communicates wirelessly with the MINIR3. The L/L1/L2/L3 terminals on S-MATE are used as terminal blocks for easier installation; leave them out if not needed. The S-MATE does not require a neutral wire as it is battery-powered.
6. Operation
6.1. App Control (eWeLink)
Once paired, you can control your MINIR3 and connected devices from anywhere using the eWeLink app on your smartphone or tablet. The app provides real-time sync status of your appliances, allowing you to turn them on/off, set schedules, and monitor their status.
Figure 9: Remote control via eWeLink App.
6.2. Voice Control
The MINIR3 is compatible with popular voice assistants, allowing for hands-free control of your smart devices. Simply connect your eWeLink account to your preferred voice assistant platform.
- Amazon Alexa: "Alexa, turn off the lights."
- Google Home Assistant: "Hey Google, turn on the fan."
- Siri Shortcuts: Use custom Siri shortcuts for quick commands. (Note: MINI R3 does not support Homekit temporarily.)
- Alice: Integrate with Alice for voice commands.
Figure 10: Voice control functionality.
6.3. eWeLink-Remote Control
The S-MATE acts as an eWeLink-Remote gateway, allowing it to control devices built into the "eWeLink-Remote gateway" (like MINIR3) even when no internet is available. It can also trigger other smart devices in smart scenes via the cloud when internet is present.
Figure 11: S-MATE's dual control capabilities.
6.4. Smart Scenes and Automation
Leverage the eWeLink app to create custom smart scenes that automate your home based on various triggers and conditions. For example, you can set a scene to turn on lights when a motion sensor is triggered, or adjust a fan based on temperature readings.
Figure 12: Setting up smart scenes for automation.
7. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Battery Replacement (S-MATE): The S-MATE is powered by a CR2032 button cell battery. Replace the battery when the device's performance degrades or the app indicates low battery. Ensure correct polarity when inserting the new battery.
- Firmware Updates: Regularly check the eWeLink app for firmware updates for both MINIR3 and S-MATE to ensure optimal performance and access to new features.
8. Troubleshooting
Here are solutions to common issues you might encounter:
Figure 13: Common smart home challenges addressed by MINIR3 and S-MATE.
- Smart lights offline when the physical switch is off: This is a common issue with smart bulbs. The S-MATE solution allows you to keep your physical switch always "on" for the smart bulb, while the S-MATE sends commands to the MINIR3 to control the power, ensuring the smart bulb remains powered and online.
- No neutral wire in the switch box: The S-MATE is specifically designed for this scenario. It operates on battery power and communicates wirelessly with the MINIR3, eliminating the need for a neutral wire at the switch location.
- Smart switches do not match original decoration styles: By using the S-MATE with your existing physical switches, you can maintain your home's aesthetic while adding smart functionality.
- Device not pairing:
- Ensure your Wi-Fi network is 2.4GHz.
- Check that the device is powered on and in pairing mode (refer to the quick start guide).
- Make sure your eWeLink app and device firmware are up to date.
- Move the device closer to your Wi-Fi router during pairing.
- Remote control not working:
- Verify your internet connection.
- Check the battery level of the S-MATE.
- Ensure the MINIR3 is online in the eWeLink app.
9. User Tips
No specific user tips were available from provided reviews or Q&A. However, general tips for smart home devices include:
- Plan your setup: Before installation, consider which lights or appliances you want to automate and how they will integrate with your existing switches.
- Test connections: Always test your wiring connections before fully assembling and powering on the devices.
- Explore eWeLink features: The eWeLink app offers many features beyond basic on/off control, such as timers, schedules, and scene creation. Take time to explore these to maximize your smart home experience.
- Consider range: While the eWeLink Remote has a range of up to 50M in open space, actual performance may vary indoors due to obstacles.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official SONOFF website or contact their customer support directly. Keep your purchase receipt as proof of purchase for warranty claims.
