1. Introduktion
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. Sikkerhedsoplysninger
Læs alle sikkerhedsadvarsler og instruktioner omhyggeligt, inden du installerer og bruger denne enhed. Manglende overholdelse af disse instruktioner kan resultere i elektrisk stød, brand eller alvorlig personskade.
- Professionel installation anbefales: Electrical installation should only be performed by a qualified electrician or professional.
- Sluk før 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.
- Kun indendørs brug: This device is designed for indoor use in dry environments. Do not expose to water or excessive humidity.
- Operation Voltage: Sørg for, at driftsmængdentage of your electrical system matches the device's specifications (240 Volts).
- Høj temperatur modstand: The PC V0 material ensures high temperature resistance and excellent flame-retardance for safety.

Billede: Intern 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 Før du begynder
- Sluk for strømmen ved afbryderen.
- Kontroller, at strømmen er slukket ved hjælp af en voltage tester.
- Ensure your wall box is compatible with the 80mm standard.
3.2 Ledningsdiagram (generelt)
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.
- Tilslut neutralledningen til 'N'-terminalen.
- 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 Montering af kontakten
- Carefully place the wired switch module into the wall box.
- Fastgør afbryderen til vægdåsen med de medfølgende skruer.
- Attach the front panel/faceplate to the switch module.
- Gendan strømmen ved afbryderen.

Image: Technical drawing illustrating the dimensions of the SONOFF M5 switch and its compatibility with 80/86 type and EU standard wall boxes.
4. Opsætning og parring
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 eWeLink-appen
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)
- Sørg for, at din telefons Bluetooth er aktiveret.
- 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. Betjeningsvejledning
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.
- Indstil tidsplaner og timere til automatiseret drift.
- 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 Stemmekontrol
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. Nøglefunktioner
- 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.
- Smarte scener og tidsplaner: 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.
- Deling af enhed: Easily share control of your smart switch with family members or friends through the eWeLink app, granting them access to manage the connected devices.
- Tovejsstyring: 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. Vedligeholdelse
To ensure the longevity and optimal performance of your SONOFF M5-3C-80 Smart Wall Switch, follow these simple maintenance guidelines:
- Rensning: 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.
- Undgå væsker: Keep the switch away from water and other liquids. This device is not waterproof.
- Temperatur og luftfugtighed: Operate the switch within its specified working temperature range (-10°C to 40°C) and avoid environments with high humidity.
- Firmwareopdateringer: Periodically check the eWeLink app for available firmware updates. Updates can improve performance, add new features, and enhance security.
8. Fejlfinding
If you encounter issues with your SONOFF M5-3C-80 Smart Wall Switch, refer to the following common problems and solutions:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Enheden kan ikke oprette forbindelse til 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. |
|
| Stemmestyring virker ikke. | eWeLink account not linked to voice assistant; incorrect device name; voice assistant not recognizing command. |
|
| Fysiske knapper reagerer ikke. | No power to the switch; internal fault. |
|
9. Specifikationer
| Attribut | Detalje |
|---|---|
| Model | M5-3C-80 |
| Mærke | SONOFF |
| Antal bander | 3 hastighed |
| Wi-Fi-standard | IEEE 802.11 b / g / n 2.4 GHz |
| Operation Voltage | 100-240V AC 50/60Hz |
| Maks. Strømudgang | 1320W (440W/Gang) |
| Nuværende vurdering | 2A/Gang (Total 6A) |
| Casing Materiale | PC V0 (Flamhæmmende) |
| Produktdimensioner | 8.6 x 7.1 x 4.15 cm |
| Varens vægt | 140 g |
| Arbejdstemperatur | -10°C til 40°C |
| Certificering | CE, UKCA, SRRC (for 86 type), IP40 |
| Switch Type | 3-vejs |
| Aktuator type | Tryk knap |
| Terminaltype | Screw or Through-hole |

Billede: 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. Garanti og 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 webhjemmeside for detaljerede garantivilkår.
For technical support, troubleshooting assistance, or any inquiries regarding your SONOFF M5-3C-80 Smart Wall Switch, please contact SONOFF Customer Service:
- Officiel Webwebsted: sonoff.tech
- eWeLink-appen: Use the "Feedback" or "Help" section within the app for direct support.





