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
Lenny george –
Great device
Need for Christmas lights
Lenny george –
Gabi –
Got it for my lava lamp
I got this dimmer for my lava lamp, which seemed to overheat after a couple hours. Using this dimmer switch, I could set up a schedule to not only turn my lamp on and off, but also to dim the lamp to a certain % after two hours of running on full power. If you have a lava lamp and a WiFi connection, this is a must!I had no problem with installation/connection of this dimmer. Easiest thing ever. I have my Christmas tree lights on one of these during the winter too! No more switching stuff on and off manually.
Gabi –
WisconsinPat –
this control 2pk is not dimmable
Purchased this because 1pk shows dimmable but got 2pk does not seem to be dimmable and dimmable not written on 2 pk box
WisconsinPat –
JaB –
This can not support 15 amp only 300 Watt, it can catch on fire
Not sure were their electrical Engineer want to school but 300 Watts is only 2.5 amps. The plug is clearly marked with a 300 watt rating yet it’s sold and even listed in the app as a 15 amp plug. 15 amps is 1800 watts. If you plug in over 300 watt (2.5) amps this plug will burn up and maybe en catch on fire! This is a very dangerous mistake.
JaB –
David –
Good dimmer
I donât often write reviews, mostly because what I have to say is a mirror of others.Some of our Z-wave plug-in outlets wouldnât connect to the new security system. And to top it off the security system has made it to where you canât add any unless you buy them from them.I have controllers from TP-Links Kasa line but none were dimmers. Itâs nice to have the ability to set the control as needed and it connected in a breeze to our Google home hub.Iâm impressed by the size they are tiny compared to the Z Wave ones and work just as well
David –
EvJ –
does not work with apple home
packaging misleading. mentions Apple Siri, but will not work up with Apple home
EvJ –
Claude N. –
It acts like a light bulb switch
It acts like a light bulb switch. I have mine hooked up to a fan and it works great.The only problem is that if you have a routine to turn off all the lights, thw fan goes off too. Now my lights off routine has a 5 second wait and a turn on fan command.
Claude N. –
John –
Led Bulbs will not shut off
Loved the dimmer until I replaced the halogen bulbs with led bulbs (T4 G9 20W), now the led bulbs are always on when I turn off dimmer. Customer support was quick to respond. Had the power socket checked out for correct ground not the problem. It appears the dimmer on the off setting still allows a small amount of power to be sent to lamp this will light the led bulbs. Solution put one halogen back into the lamp (lamp flickers when turned on or off and one bulb is different color temp), find a dimmer that works with leds, replace led bulbs with halogen or find led bulbs that have circuitry that the bulb works like an incandescent bulb.
John –