1. Introduction
Thank you for choosing the SONOFF M5-3C-80 Smart Wall Switch. This device is designed to provide intelligent control over your lighting and other electrical appliances, integrating seamlessly into your smart home ecosystem. With its physical buttons, Wi-Fi connectivity, and compatibility with popular voice assistants like Amazon Alexa and Google Home, the M5-3C-80 offers convenience and enhanced control.
This manual provides detailed instructions for installation, setup, operation, and troubleshooting to ensure you get the most out of your smart switch.
Image: The SONOFF M5 Smart Wall Switch, highlighting its sleek design and functionality.
2. Safety Information
Please read all safety warnings and instructions carefully before installing and operating this device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Professional Installation Recommended: Electrical installation should only be performed by a qualified electrician or professional.
- Power Off Before Installation: Always ensure the main power supply is turned off at the circuit breaker before performing any installation or maintenance.
- Safe Disassembly: The design allows for safe disassembly by separating high and low voltage components. However, always ensure power is off before attempting any disassembly.
- Indoor Use Only: This device is designed for indoor use in dry environments. Do not expose to water or excessive humidity.
- Operating Voltage: Ensure the operating voltage of your electrical system matches the device's specifications (240 Volts).
- High Temperature Resistance: The PC V0 material ensures high temperature resistance and excellent flame-retardance for safety.
Image: Internal view of the SONOFF M5 switch, illustrating its high temperature resistance, safety certification, and safe disassembly features.
3. Installation
The SONOFF M5-3C-80 is designed for standard 80mm wall mounts, suitable for EU and UK wall boxes. Ensure you have basic electrical knowledge or consult a professional for installation.
3.1 Before You Begin
- Turn off power at the circuit breaker.
- Verify that the power is off using a voltage tester.
- Ensure your wall box is compatible with the 80mm standard.
3.2 Wiring Diagram (General)
While specific wiring diagrams are typically provided with the product packaging, generally, smart switches require a Live wire, Neutral wire, and Load wires for each gang. The M5-3C-80 is a 3-gang switch.
- Connect the Live wire to the 'L' terminal.
- Connect the Neutral wire to the 'N' terminal.
- Connect the Load wires for your lights/appliances to the respective 'L1', 'L2', 'L3' terminals.
- Ensure all connections are secure. The terminal type is screw or through-hole.
3.3 Mounting the Switch
- Carefully place the wired switch module into the wall box.
- Secure the switch to the wall box using the provided screws.
- Attach the front panel/faceplate to the switch module.
- Restore power at the circuit breaker.
Image: Technical drawing illustrating the dimensions of the SONOFF M5 switch and its compatibility with 80/86 type and EU standard wall boxes.
4. Setup and Pairing
To unlock the full smart features of your SONOFF M5-3C-80 switch, you need to pair it with the eWeLink app.
4.1 Download the eWeLink App
Download the eWeLink app from the App Store (iOS) or Google Play Store (Android). You can search for "eWeLink" or scan the QR code usually found in the product packaging.
4.2 Register and Log In
Open the eWeLink app and register a new account if you don't have one, then log in.
4.3 Pairing the Device (Bluetooth Fast Pairing)
- Ensure your phone's Bluetooth is enabled.
- Power on the SONOFF M5-3C-80 switch. It should automatically enter pairing mode (indicated by a blinking LED). If not, refer to the product's specific instructions for manual pairing mode activation (usually by long-pressing a button).
- Open the eWeLink app. The app should automatically detect the new device nearby.
- Follow the on-screen prompts to add the device. You will be asked to select your Wi-Fi network (2.4GHz only) and enter the password.
- Once successfully paired, the device LED will stop blinking and remain solid. You can then rename the switch and its individual gangs within the app.
Image: A smartphone displaying the eWeLink app interface, demonstrating how to manage devices and control the smart switch remotely.
5. Operating Instructions
5.1 Physical Button Control
The SONOFF M5-3C-80 features high-precision physical buttons for direct control. Simply press a button to toggle the connected light or appliance on/off. Each of the three gangs operates independently.
Image: Demonstrates the quick-responsive physical buttons of the M5 switch, highlighting that it can be operated even with gloves on, making it easy for anyone to use.
5.2 APP Control (eWeLink)
Manage your devices anytime, anywhere using the eWeLink app. You can:
- Turn devices on/off remotely.
- Set schedules and timers for automated operation.
- Create Smart Scenes to control multiple devices with a single tap or based on conditions (e.g., turn on lights when you arrive home).
- Share device control with family members or friends who also have eWeLink accounts.
5.3 Voice Control
The SONOFF M5-3C-80 is compatible with Amazon Alexa and Google Home, allowing for hands-free control.
- Amazon Alexa: Link your eWeLink account in the Alexa app. Then, you can say commands like, "Alexa, turn on the living room light."
- Google Home: Link your eWeLink account in the Google Home app. Then, you can say commands like, "Hey Google, turn off the bedroom light."
Image: Displays compatibility logos for various smart home platforms, including Hey Google, Alexa, SmartThings, and Alice, indicating broad integration capabilities.
6. Key Features
- Dimmable LED Indicator: The LED indicator on the button can be adjusted for brightness, allowing you to easily locate the switch in the dark without disturbance. The brightness is adjustable when the device is turned off.
- Smart Scenes & Schedules: Automate your home by setting up schedules for lights to turn on/off at specific times, or create smart scenes that trigger actions based on other smart devices or conditions.
- Device Sharing: Easily share control of your smart switch with family members or friends through the eWeLink app, granting them access to manage the connected devices.
- Two-Way Control: Achieve two-way or multi-way control by pairing with a Scene Controller (sold separately), eliminating the need for complex wiring.
Image: A smartphone screen showing the eWeLink app interface for adjusting the brightness of the LED indicator on the smart switch.
Image: A visual representation of the various control methods and features, including APP control, scheduling, smart scenes, voice control, and the dimmable LED indicator.
7. Maintenance
To ensure the longevity and optimal performance of your SONOFF M5-3C-80 Smart Wall Switch, follow these simple maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the surface of the switch. Do not use abrasive cleaners, solvents, or excessive moisture, as these can damage the device.
- Avoid Liquids: Keep the switch away from water and other liquids. This device is not waterproof.
- Temperature and Humidity: Operate the switch within its specified working temperature range (-10°C to 40°C) and avoid environments with high humidity.
- Firmware Updates: Periodically check the eWeLink app for available firmware updates. Updates can improve performance, add new features, and enhance security.
8. Troubleshooting
If you encounter issues with your SONOFF M5-3C-80 Smart Wall Switch, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device cannot connect to Wi-Fi. | Incorrect Wi-Fi password; 5GHz Wi-Fi network; device too far from router; Wi-Fi interference. |
|
| Device offline in eWeLink app. | Loss of internet connection; power outage; router settings changed. |
|
| Voice control not working. | eWeLink account not linked to voice assistant; incorrect device name; voice assistant not recognizing command. |
|
| Physical buttons unresponsive. | No power to the switch; internal fault. |
|
9. Specifications
| Attribute | Detail |
|---|---|
| Model | M5-3C-80 |
| Brand | SONOFF |
| Number of Gangs | 3-Gang |
| Wi-Fi Standard | IEEE 802.11 b/g/n 2.4GHz |
| Operating Voltage | 100-240V AC 50/60Hz |
| Max. Power Output | 1320W (440W/Gang) |
| Current Rating | 2A/Gang (Total 6A) |
| Casing Material | PC V0 (Flame-retardant) |
| Product Dimensions | 8.6 x 7.1 x 4.15 cm |
| Item Weight | 140 g |
| Working Temperature | -10°C to 40°C |
| Certification | CE, UKCA, SRRC (for 86 type), IP40 |
| Switch Type | 3-Way |
| Actuator Type | Push Button |
| Terminal Type | Screw or Through-hole |
Image: Overview of the SONOFF M5 series, showcasing the M5-1C-80, M5-2C-80, and M5-3C-80 models, as well as their 86-type counterparts, allowing users to choose based on their needs.
10. Warranty and Support
SONOFF products typically come with a standard manufacturer's warranty. Please refer to the warranty card included with your product or visit the official SONOFF website for detailed warranty terms and conditions.
For technical support, troubleshooting assistance, or any inquiries regarding your SONOFF M5-3C-80 Smart Wall Switch, please contact SONOFF Customer Service:
- Official Website: sonoff.tech
- eWeLink App: Use the "Feedback" or "Help" section within the app for direct support.
