1. Product Overview
The meross MSG100 Smart WiFi Garage Door Opener Remote transforms your existing garage door into a smart, app-controlled system. It allows for remote operation and monitoring of your garage door from anywhere, integrating seamlessly with popular smart home platforms like Amazon Alexa, Google Assistant, and SmartThings. This device provides enhanced convenience and security without the need for a separate hub.

Figure 1: meross MSG100 Smart WiFi Garage Door Opener Remote and its mobile app interface.
2. Safety Information
Please read and understand all safety instructions before installing and operating the meross MSG100. Failure to follow these instructions may result in electric shock, fire, or serious injury. Keep this manual for future reference.
- Ensure power to the garage door opener is disconnected before installation.
- Install the device in a dry indoor location, away from water and excessive humidity.
- Do not attempt to repair or modify the device. Refer all servicing to qualified personnel.
- Always be aware of your surroundings when operating the garage door remotely. Ensure no people, pets, or objects are in the path of the closing door.
- The device will beep before closing the garage door when operated remotely to warn anyone nearby.
3. Package Contents
The meross MSG100 package typically includes:
- Smart Wi-Fi Garage Door Opener
- Wired Door Sensor
- Power Adapter
- USB Cable
- Mounting Screws and Anchors
- Double-sided Adhesive Tape
- User Manual
4. Setup and Installation
Follow these steps to install and set up your meross MSG100 Smart WiFi Garage Door Opener:
4.1. Compatibility Check
Before installation, it is crucial to verify if your existing garage door opener is compatible with the meross MSG100. You can check the compatibility list on the official meross website:
If your garage door requires accessories to resolve compatibility issues, please contact the meross support team with information about your garage opener. They can ship the proper accessory separately.
4.2. Physical Installation
- Power Off: Disconnect power to your garage door opener for safety.
- Mount the MSG100: Choose a suitable location near your garage door opener, ensuring good Wi-Fi signal strength. Mount the MSG100 device using the provided screws or double-sided adhesive tape.
- Install the Wired Sensor: Attach the wired sensor to the garage door. The sensor consists of two parts: one part attaches to the wall or door frame, and the other part attaches to the moving garage door itself. Ensure they are aligned and close enough to detect the door's open/closed status accurately.

Figure 2: Proper placement of the wired door sensor for accurate status monitoring.
- Connect to Garage Door Opener: Connect the control signal cable from the MSG100 to your garage door opener's wall button terminals. These are typically the same terminals where your existing wall button wires are connected. Use a screwdriver to secure the wires.

Figure 3: Connecting the control signal cable to your garage door opener's terminals.
- Connect Power: Plug the power adapter into an outlet and connect it to the MSG100 device. Reconnect power to your garage door opener.
4.3. App Download and Configuration
- Download the meross App: Search for "meross" in the Apple App Store or Google Play Store and download the official app.
- Register/Log In: Open the app and create a new account or log in with an existing one.
- Add Device: Follow the in-app instructions to add your MSG100 device. This typically involves selecting the device type, connecting to its temporary Wi-Fi network, and then connecting it to your home's 2.4GHz Wi-Fi network.
- Pair and Configure: The app will guide you through the pairing process and initial configuration, including naming your garage door and setting up basic preferences.
4.4. Installation Video Guide
For a visual guide on the installation process, please refer to the official meross installation video:
Video 1: Official meross Smart Garage Door Opener Remote installation and feature overview.
5. Operating Your Smart Garage Door Opener
5.1. App Control
Control your garage door from anywhere using the meross app. Simply tap the open/close button to operate the door. The app provides real-time status updates, indicating whether your garage door is open or closed.

Figure 4: Remote control of your garage door via the meross app.
5.2. Voice Control
The MSG100 is compatible with Amazon Alexa, Google Assistant, and SmartThings, allowing for convenient voice control of your garage door. Link your meross account within the respective smart home app.
- Amazon Alexa: "Alexa, open the garage door." (A PIN may be required for opening for security reasons, as per Amazon's policy).
- Google Assistant: "Hey Google, is my garage door closed?" or "Hey Google, open the garage door."

Figure 5: Voice control integration with Amazon Alexa and Google Assistant.
5.3. Notifications and Reminders
Stay informed about your garage door's status with various notification modes:
- Open/Close Status: Receive instant notifications when your garage door opens or closes.
- Overtime Notification: Get alerts if the garage door has been open for a specified duration.
- Overnight Notification: Be reminded to close the garage door if it's still open late at night.

Figure 6: Examples of timely notifications and reminders from the meross app.
5.4. Operation History Log
The meross app keeps a detailed record of all garage door operations, including open/close times and the method of operation (manual, app, voice). You can access this history anytime to review activity.

Figure 7: Reviewing the operation history of your garage door in the meross app.
5.5. Routine Offline Control
For added reliability, routine schedules configured in the meross app are stored locally on the device. This means your scheduled operations will still execute even if your internet connection is temporarily down.

Figure 8: The MSG100 supports routine offline control for uninterrupted operation.
6. Maintenance
To ensure optimal performance and longevity of your meross MSG100, consider the following maintenance tips:
- Keep Sensors Clean: Periodically check and clean the wired door sensor to ensure it remains free of dirt, dust, or obstructions that could interfere with accurate detection.
- Check Wi-Fi Signal: Regularly verify that the MSG100 device has a strong and stable 2.4GHz Wi-Fi connection. Poor signal can affect responsiveness and reliability.
- App Updates: Keep your meross app updated to the latest version to benefit from new features, bug fixes, and security enhancements.
- Firmware Updates: The meross app will notify you of any available firmware updates for the MSG100. Install these updates as recommended to ensure the device operates with the latest improvements.
7. Troubleshooting
If you encounter issues with your meross MSG100, please refer to the following common troubleshooting steps:
- Device Offline:
- Ensure the device is powered on and the power adapter is securely connected.
- Check your home Wi-Fi network. Ensure it is active and the 2.4GHz band is enabled.
- Verify the Wi-Fi signal strength at the MSG100's location. If weak, consider moving the device closer to the router or using a Wi-Fi extender.
- Restart your Wi-Fi router and the MSG100 device.
- Garage Door Not Responding:
- Confirm that the control signal cables are correctly and securely connected to your garage door opener's terminals.
- Check the wired door sensor. Ensure both parts are properly aligned and the sensor is functioning (e.g., indicator light on the MSG100 changes when the sensor parts are moved apart/together).
- Test your traditional garage door wall button to ensure the opener itself is working correctly.
- App Issues:
- Ensure your meross app is updated to the latest version.
- Clear the app's cache or reinstall the app if persistent issues occur.
- Verify your smartphone has a stable internet connection.
- Compatibility Problems:
- Double-check your garage door opener model against the meross compatibility list.
- If an accessory is required, ensure it is correctly installed and configured.
For more detailed troubleshooting, you can refer to the official Troubleshooting Guide (PDF) provided by meross.
8. Specifications
| Model Number | MSG100 |
| Product Dimensions | 3.7 x 1.8 x 0.9 inches |
| Item Weight | 8.1 ounces |
| Input | 5V ≈ 1A |
| Wireless Standard | IEEE 802.11 b/g/n, 2.4GHz |
| Material | ABS V0 flame retardant |
| Color | White |
| Max Number of Supported Doors | 1 (for MSG100 model) |
| Compatible Devices | Garage Door Openers (check compatibility list) |
| Special Feature | No subscription fees or advertising, APP and voice control |
9. Warranty and Support
meross is committed to providing excellent customer service and product support.
- Warranty: The meross MSG100 comes with a 1-year unconditional warranty from the date of purchase.
- Technical Support: meross offers 7*24 hours technical support and lifetime technical support for its products.
- Contact Support: If you encounter any issues or have questions about your product, please do not hesitate to contact the meross support team. Contact information can typically be found on the meross website or within the meross app.