1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your SONOFF M5-3C-120 Switchman Smart Wall Switch. Please read this manual carefully before use to ensure proper functionality and safety.
2. Safety Information
For your safety, always observe the following precautions:
- Turn off power at the circuit breaker before installation or maintenance.
- Installation should be performed by a qualified electrician.
- Ensure the device is used within its specified voltage and current ratings.
- This device is FCC certified, ensuring reliable and safe operation.
- Do not expose the device to moisture or extreme temperatures.
3. Package Contents
Verify that all items are present in your package:
- Smart wall switch x 1
- Screws x 2
- Quick guide x 1
4. Specifications
| Feature | Detail |
|---|---|
| Model | M5-3C-120 |
| Product Dimensions | 4.72 x 2.91 x 1.63 inches; 15.87 ounces |
| Operation Mode | ON-OFF |
| Current Rating | 6 Amps |
| Operating Voltage | 240 Volts |
| Contact Type | Normally Closed |
| Connector Type | Clamp |
| Terminal | Screw |
| Circuit Type | 1-way |
| Actuator Type | Push Button |
| Manufacturer | SONOFF |
5. Setup
5.1 Before Installation
Ensure the main power supply to the circuit is turned off at the circuit breaker before attempting any wiring. A neutral wire is required for this smart light switch.
5.2 Wiring Diagram
Connect the live wire (L) and neutral wire (N) to the corresponding terminals on the switch. Connect the load wire (L1, L2, L3 for 3-gang) to the respective output terminals. Always follow local electrical codes.
5.3 App Installation
To control your smart switch remotely, download the eWeLink app:
- Search for "eWeLink" on the Google Play Store.
- Search for "eWeLink" on the Apple App Store.
5.4 Device Pairing
Follow these steps to pair your SONOFF M5-3C-120 with the eWeLink app:
- Long press any random button on the M5-3C-120 for 5 seconds until the Wi-Fi LED indicator changes in a cycle of two short and one long flash. Release the button.
- Open the eWeLink app on your smartphone.
- Tap the "+" icon and select "Bluetooth Pairing".
- The app will scan for nearby devices. Select your M5-3C-120 from the list.
- Enter your Wi-Fi network credentials when prompted.
- Wait for the device to connect. Once successfully paired, you can control the switch via the app.
For a visual guide on the pairing process, please refer to the official video below:
6. Operating Instructions
6.1 Basic Operation
The SONOFF M5-3C-120 features quick-responsive physical buttons for direct control of your lights. Simply press a button to toggle the connected light on or off. The buttons are designed to be easily used by anyone, even with gloves on.
6.2 App Control
Once paired, the eWeLink app provides comprehensive control over your smart switch:
- Remote Control: Turn devices on/off from anywhere using the eWeLink app.
- Scheduling & Timers: Set schedules to automatically turn lights on or off at specific times, such as turning on lights at dusk.
- Voice Control: Compatible with Alexa and Google Home, allowing hands-free control using simple voice commands.
- Smart Scene: Create smart scenes to automate actions, such as turning on lights automatically when a door sensor (like DW2-WiFi) detects an open door.
- eWeLink-Remote Gateway Function: The M5-3C-120 can be paired with the SONOFF R5 remote controller for dual control, offering enhanced flexibility.
- Adjust LED Light: The brightness of the button's LED indicator can be adjusted via the app, especially useful for locating the switch in the dark or for undisturbed sleep.
6.3 Two-Way Control
With a Scene Controller like the SONOFF R5, you can achieve two-way or multi-way control of the same light from different positions, eliminating the need for complex traditional wiring.
Refer to the official video in Section 5.4 for a demonstration of two-way control.
7. Maintenance
To ensure the longevity and optimal performance of your SONOFF M5-3C-120 Switch:
- Clean the surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Avoid exposing the device to direct sunlight or excessive heat.
- Ensure the device is installed in a well-ventilated area.
8. Troubleshooting
If you encounter issues with your SONOFF M5-3C-120 Switch, consider the following:
- Device Offline/Disconnection: If the device frequently disconnects or goes offline, ensure your Wi-Fi router is stable and within range. Power outages or router reboots can sometimes cause temporary disconnections, requiring re-pairing or checking network settings.
- Pairing Issues: If pairing fails, ensure the switch is in pairing mode (LED indicator flashing as described in Section 5.4). Keep your smartphone close to the device during pairing. Verify your Wi-Fi password is correct and that you are connected to a 2.4GHz Wi-Fi network.
- No Response: Check if the power supply to the switch is active. Ensure wiring is correct according to the diagram.
- LED Indicator Behavior: If the LED indicator is not behaving as expected, refer to the eWeLink app settings to adjust its brightness or check its status.
9. Warranty Information
Specific warranty details for the SONOFF M5-3C-120 Switchman Smart Wall Switch are typically provided with your purchase documentation or on the manufacturer's official website. Please refer to those resources for comprehensive warranty terms and conditions.
10. Customer Support
For further assistance or inquiries regarding your SONOFF M5-3C-120 Switch, please contact SONOFF customer support:
- Manufacturer: SONOFF
- Email: support@itead.cc
- Website: sonoff.tech
