How does the gateway communicate with the garage door opener? I don't have good WiFi reception in my garage if that's needed.

The garage door opener does not use WiFi as some suggest. The gateway connects directly to your router utilizing an RJ-45 cable. It then operates exactly like a garage door opener, using those Radio Frequencies to do so. You create an account on myliftmaster.com to enable the ability to connect to your gateway at home from anywhere. The "WiFi" connectivity they speak of, is actually the ability to utilize your cell phone or WiFi-enabled internet device to access myliftmaster.com and operate your garage door. Otherwise, this device operates like any other opener, and it is NOT using 802.11 signals like others have suggested. Please take a garage door opener to the location of your internet router. If you can still open/close the door, you can use this gateway.

Does this device, with the Android app, let you know if the door is open or closed, or does it just let you change the state from one to the other? I.e., if I don't know if the door is open or closed, is this useless?

I get a notification when garage door gets opened and closed, at the moment it happens. The app, as stated, will tell you current state. I also have my MyQ hooked up to my Wink, which adds the ability to let me know "the garage is still open" after specified time window. I may have missed that my garage door was opened, but I want a notification if the garage is left open for 30 minutes...as a reminder that it is still open. This is always my fear, that I left the garage open. With the notifications only on the change of open/close, I may not know that the garage remains open, since I get busy doing other things and don't check the MyQ app every 15 minutes. I don't believe the MyQ alone will do this.

What is the maximum distance between router and the wireless garage door opener? My closest internet connection is about 100 ft from openers. Thanks

I am not sure. I will be happy to look at the paperwork that came with the unit and reply later, but suffice to say, my garage door opener and this unit are approximately 80-90 feet away. I would say it would be whatever distance your current remote garage door opener currently works. As I understand this unit, it works like a remote garage door opener (like the one in your car), but it is controlled through the internet so you can open/close the garage literally wherever you have an internet/smartphone connection - and it be within rage of what your remote works. Again, it must be connected to the internet, so if you have an extra port in your router to connect this unit, you are set! This unit is NOT wireless. I did not have enough ports in my router, so I connected it through my satellite box which is connected to the internet.

Does all traffic get routed through the myq servers (ie does myq have control over the door and surveillance of the house)?

Goes through their server; what is worse is that you have no clue when the server goes down or gets hosed. You know nothing other than the app on the phone cannot connect to the server. Yeah, they could open/close your door but honestly, are you that important for anyone else to bother ? Me neither. But what really annoys me is that this thing has no debug mode other than blinking lights and the reset button... and when it is acting weird, you never know what is wrong. I am to the point of throwing in the trash can and buying our 4th remote controller.

Size	1 Pack
UPC	885161302411 640213239929 012381998289 302706414717 827165672787
Global Trade Identification Number	00012381998289
Manufacturer	LiftMaster
Part Number	828LM
Item Weight	5.3 ounces
Product Dimensions	8 x 6 x 2 inches
Item model number	828LM
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Included Components	828LM LiftMaster Internet Gateway
Batteries Included?	No
Batteries Required?	No
Description Pile	Lithium
Warranty Description	1 year Warentty

828LM Internet Gateway

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