Product Description

Do You Need an Extra Accessory? 
Step 1
Use pliers to short the wall button terminals, if the garage door opens or closes, it works. Otherwise, please go to point 2.
Compatibility list is in the “Product guides and documents-User Guide” .
Accessory manual is in the “Product guides and documents-Instructions for Use (IFU)”

Step 2
If point 1 fails, your garage opener is from Chamberlain/LiftMaster/Craftsman. MSG100HK will still work(needs an extra accessory). Please claim the accessory on the meross web or send the support team the information for your garage opener and we will send you the appropriate accessory individually.
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
For more installation information, please search for the video “meross MSG100”. If you meet any issue about our product, simply contact meross support team. Accessory manual manual is in the “Product guides and documents-Instructions for Use (IFU)” of the page.
Data Encryption
Meross has powerful data encryption functions to protect your information security.
Offline Control
When the internet is down, you can still control your devices in home network via Meross app.Close the door automatically when the door is still open after a particular time.
Auto Close
Close the door automatically when the door is still open after a particular time.
Package Contents :1 x Smart garage door opener, 1 x USB adapter, 1 x Door sensor with sensor wire, 4 x Screws, 1 x Test wire, 1 x Double-sided adhesive tapes,1 x User manual.
The Existing Wall Button and Existing Remote Control can still work, after you installed the meross garage door opener.
Installation Steps 
Step 1 – Compatibility Check
The product is compatible with more than 1600 models and 200 brands. Please follow the instructions to complete a simple compatibility test.

Step 2 – Connect the Phone
Connect your smartphone or tablet to a 2.4GHz network and ensure that your smart device is covered by a powerful network signal.

Step 3 – Install the Sensor
Please make sure the distance between the two sensors is less than 1 inch when the garage door is closed.

Step 4 – Deploy the Device
Install the wire from the sensor to the garage door opener. We recommend deploying the device on top of your existing garage door opener.

2.4GHz WiFi network support only: If you keep failing during the setup process and your router has both 2.4GHz and 5GHz WiFi, you may need to temporarily turn off 5GHz on your WiFi router and make sure your smart device is always covered by a strong 2.4GHz WiFi signal.
More Smart Devices from Meross
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Customer Reviews
4.3 out of 5 stars
11,328
4.3 out of 5 stars
11,328
4.3 out of 5 stars
11,328
4.3 out of 5 stars
11,328
4.3 out of 5 stars
192
4.3 out of 5 stars
159
4.3 out of 5 stars
4,107
Price
$49.99$49.99
—
$35.99$35.99
$69.99$69.99
$39.99$39.99
$79.99$79.99
$38.99$38.99
Number of Control Doors
1
Up to 3
1
Up to 3
NA
NA
NA
Works with Apple Home
YES
NO
NO
YES
YES
YES
YES
Works with Google Home
YES
YES
YES
YES
YES
YES
YES
Works with Alexa
YES
YES
YES
YES
YES
YES
YES
Works with SmartThings
YES
YES
YES
YES
YES
YES
YES
Control Method
App&Voice
App&Voice
App&Voice
YES
App&Voice
App&Voice
App&Voice
Remote Control: You can turn the garage door on/off from anywhere with internet access via the Meross app. To let in your family, guests, or couriers through the garage door while you are cooking or not at home. No monthly fee or any other subscription fee! Note: 2.4GHz network support only
Voice Control: You can control your devices hands free, just give voice commands to turn on/off the connected devices. Compatible with Apple HomeKit, Siri, Amazon Alexa, Google Assistant, and CarPlay. Please scroll down and check the “Product guides and documents – User Manual” for more product information
Compatibility Check: It is compatible with more than 200 brands. Please follow the instructions on this page to do a simple compatibility test or refer to our compatibility list”Product guides and documents-User Guide”. If your garage door needs accessories to solve compatibility issues. please send meross support team the information about your garage opener, we will send the right accessories for you individually
More Precise and Stable: It comes with a high sensitivity sensor that monitors the status of the garage door more accurately and the signal stays stable. And you can check the garage door open/ close operation records through the app. Stay alert by different notification modes such as garage door open/ close status, overtime notification, and overnight notification to remind you to close the garage door
Easy to Install: Installation is much easier than you may think. Please make sure your network strength is acceptable near your garage door. If you meet any issue about our product, simply contact meross support team. You can search for videos of “meross garage opener” or “meross MSG100” to learn more about features and installation instructions
Liv S –
Worked Great in France and Norway, not England
These worked perfect for my trip to Europe. All my devices plugged in just like home. We visited France and Norway, and found no issues with any of their plugs, including airports, hotels, and airbnbs. We spent one night in London, since England uses a different plug, they were of no use there.A 3 pack was very helpful since two of us were traveling, one order was enough for us. They are a very small and fit in my bags easily. Iâve used the universal adapters before and they can be quite bulky. Great value for the price, just be sure to research which plugs the country uses.
Liv S –
The Doctor –
Worked well in France and Portugal
I already have an adapter with USB ports which is more useful in some ways but as we were going to be taking about 11 flights where it is sometimes handy to use mains chargers I wanted some simple adapters that we could use in Europe with the mains chargers. These adapters are relatively cheap but effective and were snug in the outlets in hotels and houses in France and Portugal. We experienced no problems art all.If I have a minor complaint I wish that they were folding but really they don’t take up much apace in the corner of a carryon or personal item bag. Recommended for your travels
The Doctor –
NC Reviewer –
Sturdy and performs as expected
These adapters are solidly constructed and work flawlessly. My only suggestion would be to add a clear marker as to docket orientation: top and/or bottom.
NC Reviewer –
Mark Bassett –
Simply work and great value
These simply work and are great value for foreign hotels without US plugs or even cruise ships where there is one US plug and one EU plug.. When travelling with someone or multiple devices itâs very handy to have multiples.
Mark Bassett –
Amazon Customer –
Also useful in Czech Republic (Prague, at least)
What the headline says. Used to plug in my wife’s CPAP machine and usual USB stuff. Note that this is NOT a voltage converter, just a plug adapter, so make sure your device is 115/120/220/240 multivoltage compatible (as all newer gizmos are) or take a separate voltage converter.
Amazon Customer –
Tim in Texas –
Well Built and Perfect for the European Getaway
It did what it was supposed to do!
Tim in Texas –
The Chad –
Worked well
Used these in Paris & they worked great!
The Chad –
Steve Ragoo –
Perfect for SPAIN
Went to Barcelona Spain and no problems with this!! I totally recommend! Bring all three with you just in case you lose one and/or are travelling with companions!!!!! I do recommend unplugging them when not in use. I was able to charge my phone, apple air, camera batteries all without a problem! good purchase and would get again! recommended!
Steve Ragoo –
Penny –
Se sienten de buena calidad, son de plástico ligero pero no “barato”. El tamaño es más grande lo que imaginaba, aún asà es portátil.
Penny –
Brosdad –
Purchased to have on hand for a recent trip to Cuba. Worked great. And price was great for a three pack
Brosdad –
Alex H –
Calidad OK, Funcionalidad OK. Nada espectacular, simplemente cumple.
Alex H –
Snow Wombat! –
Good material and it does the job!
Snow Wombat! –
Karla Longinos –
Completamente calidad y precio. Cumple con la función
Karla Longinos –