- Check Compatibility and Power Up
- Connect to the Meross App
- Wire to Your Garage Door Opener
- Install the Door Sensor
Most users complete this in under 45 minutes
Overview
This guide provides instructions for installing the Meross MSG100 Smart WiFi Garage Door Opener. It covers checking compatibility with your existing opener, wiring the device, installing the door sensor, and connecting it to the Meross app for smart control.
What's Included
- Meross Smart WiFi Garage Door Opener
- Door sensor with connecting cable
- Power adapter for the main unit
- Screws and other mounting hardware
- User manual for installation steps
- Your smartphone with the Meross app
Got your materials ready? Here's what to check first.
Before You Start
- A compatible garage door opener motor
- A 2.4GHz Wi-Fi network with a good signal
- A power outlet near your garage opener
- The Meross app installed on your phone
- The wires are connected to the right terminals
- The door sensor is installed and connected
Don't skip this step — it breaks everything if you do
Always disconnect power to your garage door opener before making any wiring connections to prevent electrical shock.
Tools & Requirements
These tools will help you complete this fix.
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Installation Steps
Check Compatibility and Power Up
Before beginning the installation, visit the Meross website to confirm that your garage door opener model is compatible with the MSG100. Once confirmed, power up the smart opener by plugging it into a nearby power outlet using the included adapter.
Connect to the Meross App
Open the Meross app on your smartphone and tap the '+' icon to add a new device. Select 'Smart Garage Door Opener' from the list and follow the on-screen instructions to connect the MSG100 to your home's 2.4GHz Wi-Fi network.
Wire to Your Garage Door Opener
Connect the two signal control wires from the MSG100 to the same terminals on your garage door opener motor that your existing wall-mounted button is connected to. This allows the Meross device to send the open/close signal to the motor.
Install the Door Sensor
Securely mount the two parts of the door sensor—the magnet and the sensor—to your garage door and the door frame using the provided screws or adhesive. Ensure they are aligned and close together when the door is shut. Connect the sensor's cable to the MSG100 unit.
Installation Tips
Still stuck? This is usually the deeper cause below.
The door sensor must be properly aligned for the app to accurately report whether your garage door is open or closed.
Before you go — these Meross guides fix most remaining issues.
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Official Manufacturer Manual
If you need the complete manufacturer documentation for advanced setup, wiring diagrams, or detailed specifications, you can download the official manual below. The manual includes full technical instructions directly from the manufacturer and may help if your issue requires deeper troubleshooting.
Download the Official Meross MSG100 Smart WiFi Garage Door Opener ManualSource: meross.com
Need More Help? Meross Support
Note: The contact information below connects you directly to Meross's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.






