THIS IS A MAJOR UPDATE to my experience with this product! This thing worked for about 10 days. Then one day I noticed on the app that the doors had been opened for several days, which I knew to be inaccurate. I thought I might have an internet connectivity issue, so I moved an Airport Express nearby. That did not remedy the situation. I noticed that there were no blinking lights from the unit to indicate an internet connection or lack of one. I took the unit down, plugged it directly into another outlet and I get a quick sequence of a yellow light, green light and blue light and then all lights stay out. It's supposed to have a blinking blue light indicating the internet connection needs to be set up. The reset button didn't work either. Pretty sure it's a hardware issue. I tried to seek assistance on Chamberlain community forum, but that site is so screwed up that it doesn't recognize whether you are logged in or not. I intend to call today, maybe they'll replace. The concept for this is a great one -- the engineering side from connectivity to hardware issues indicates this system IS NOT ready for prime time!SECOND FOLLOW-UP: I called customer service - no wait, patched straight through. I told the rep about my experience and they are air mailing me a new one, due to be received in two days. I was surprised, they are not asking for a return of the defective one and are providing the complete system vice just the wi-fi hub. But, whatever. I'm going to give it another try and hopefully the next one works as intended.INITIAL REVIEW: This thing is pretty good. I installed it in about an hour and a half. I plugged it in on my kitchen counter to get the network set up .... and that is the issue that took the longest amount of time. I had to repeat steps several times before it finally joined my network -- and then did two firmware updates. I have double doors, and there was no second sensor (which has to be bought separately) that I saw on Amazon and I ended up ordering one from Home Depot that arrives tomorrow. Once I got the device joined to my network, I installed the sensor on one garage door and then picked a site exactly between the two door openers. Since I have easy access to the area above my garage ceiling, I drilled a small hole near the device and ran the wiring out of sight to the 110 outlet near the opener. I had to use an extension cord, but this thing is not drawing a lot of power, so I don't think that's a fire hazard. I might later just put a 110 outlet next to the light switch in the attic area above my garage - but that's a project for another day. My garage doors are by Overhead Door and the set up was easy - it picked up the code for my opener on the second pass - but it should be noted that I had new garage doors installed just over two years ago -- so being relatively new might have helped with the code pairing. The app for this is somewhat lacking. First, I linked to my Nest thermostats -- and now when I open the app - I see Nest and not my garage door status -- I mean linking to Nest (I don't know what purpose this really serves) is fine -- but the main purpose of the app is for my garage doors and that's what I want to see when I open the app. The other thing I don't like is when I use the app to close my garage, the devices lights up and starts beeping -- I guess this is some perceived obligatory warning -- but I have no use for it and wish the app had the choice of turning that off. Bottom line is expect some difficulty joining this thing to your network, 10 minutes or so wasted to download firmware, and less than a solid app. But it does serve the purpose which I purchased it and while setup was not a breeze, it's doable.