First I've read many reviews before buying. I was hesitant (read the negative reviews), but decided to try anyhow because this seems to be the best product for non-chamberlain/liftmaster products (by the way if you have chamberlain/liftmaster consider yourself lucky as that is the best product i've ever experienced; plus they have a separate more functional MyQ product).

DISPELLING RUMORS:
- this does support WPA2 Personal (all forms AES, TKIP, AES+TKIP); also WEP and WPA (but I strongly recommend WPA2-AES)
- this does work with my Genie Pro Model 1024 garage door opener
- this product does update frequently (so issues seem to be taken seriously)
- this product does connect to my router without difficulty (I have buffalo WZR-HP-G300NH with DD-WRT)
- ipad works with the iphone app
- android app also works (I have android v4.3)
- Registration with full address is completely optional now (even to set timezone as one reviewer complained about in past)

FEW KEY WEB LINKS:
- the manual for MyQ Garage
chamberlain.com/CatalogResourcesV3/en-us/shared/files/tucmanuals/114A4618.pdf

- FAQ for MyQ Garage (very useful!)
chamberlain.com/CatalogResourcesV3/en-us/ccv3/support/myq/2_2/en/mobile/advanced/resources/Toc_2.htm

- webpage to log into your garage
mychamberlain.com

INSTALLATION TIPS:
- install door detector on garage door (make sure top facing up; I strongly recommend screwing it in)
- plug wifi hub into any electrical socket, you can install it in the ceiling next to the garage door opener but I chose not to (note there is an obvious safety reason to install in your garage but my garage door has enough safety features)
- interestingly this wifi hub can serve as a "router" for setup purposes or a "wifi hub" for usage purposes. to setup you essentially are connecting to it as if it were an open wifi network
- wifi hub has 3 buttons (settings, #1, #2) I have no clue what #1 and #2 do... (see comment below)

- initially blue light should be blinking, this means it is ready to setup connection to your router (if you don't see this hold the settings button down until blue starts blinking)
- do android device setup even if iphone/ipad (iphone bluetooth/wifi thing didn't work for me). make sure blue light blinking. use your wifi to connect to the open wifi network called MyQ-XXX device (XXX is last 3 of your serial #). goto on your web browser (setup.myqdevice.com). The rest should be self explanatory.
- as another reviewer pointed out, there is a rediculously long list of supported openers, pick wisely
- solid green means it worked and is now serving as a wifi hub and connected to your real router.

- next is to link the door detector and garage door opener to the wifi hub and setup alerts
- for this you will need to the website (mychamberlain.com) or the iphone/android free app (search MyQ Chamberlain)
- The app is easier to use to setup door detector and garage door opener
- The website is easier to setup alerts (android app can't setup alerts after open X min for some reason)
- Test as much as you want

USAGE TIPS:
- note the wifi hub will flash light and beep loudly if you close the door using the app/web
- this does not auto-close after set time period (PLEASE add this feature!)
- alerts available? (door open/close, door open for X minutes, light turns on/off)
- alerts can be set to trigger all times/days; certain days of week; certain times of day
- it can email and/or notification alert your smartphone/tablet
- all alert triggers are stored for later review

- I've set mine to alert every minute from 5-10 to ensure I don't miss the alert by accident
- the smartphone app has option of using security 4 digit pin instead of email/pw for login/function access.
- yes you can set it up to alert multiple smartphone/tablets simultaneously

DOOR DETECTOR BATTERY:
- 1x lithium coin CR2450 (these are fairly cheap on amazon)
- very easy to access
- I have no clue about battery life.... (will update when the time comes... also see comment below)

RELIABILITY (UPDATE):
I set it from the beginning to email me with every open/close to test its reliability. I've had it for a bit now and initially I had the wifi hub in my kitchen actually. I think either the distance was too far from the door detector or the door detector was not screwed on tightly enough. I was getting initially random alerts that the door was open when it wasn't and vice versa. Small chance it was actually opened but i doubt it. I fixed both issues by tightening the screws on the door detector and moving the wifi hub into my mudroom. Since then I have had 100% reliability. I haven't experienced the router disconnects or other problems I've seen other users have. My wifi bar in my garage is barely 1-2 on my cell phone (part of the reason i'm using mudroom for the wifi hub).

will update as needed.

COST (UPDATE):
currently 130$, kind of pricey for just a monitor but i guess it has a monopoly on the market for now until other manufacturers catch up.

Alternatives you can consider...
- schlage electronic keypad deadbolt (approx 100$) -- this is awesome for any door but makes locking/unlocking the door from garage into your house easier. i strongly recommend this one which has a manual deadbolt motion after you enter the right electronic key instead of the motorized deadbolt motion as sometimes the deadbolt isn't positioned perfectly to close and you have to wiggle the door a bit. the motorized one will just fail. great by the way for a front/side door. this won't protect your garage from theft but it will prevent people from getting into your house thru an open garage.

- a new chamberlain garage door opener (example WD962KEV (approx 243$, now 203$ with father's day discount) -- this has myQ built in with the added feature that it can auto-close the door after a certain time without your intervention. also i've had one before with my prior house and the buttons are much more responsive than Genie. also the outdoor keypad works way better and can be closed without entering a key combination (makes sense as it allows you to close quickly from outside or let neighbors close for you without knowing combo). Honestly if i had the father's day discount i would have just upgraded my entire garage door opener.

OVERALL:
I'm very impressed with this device thus far. Strongly recommend for now. I've left my garage door open a few times every year by mistake. With thefts and home breeches in our area, this gives much peace of mind. Thank you Chamberlain.

Will update if things change.

I just installed and it works as advertised. Follow the instructions for installation and it works like a charm. I did not install in the ceiling as directed for 2 reasons: 1. In a detached garage, ceiling next to opener would have added another 10-15 feet for wifi connection, didn't want to add wifi extender. 2. A couple reviews mentioned interference. Set-up is pretty easy and I was able to get this going in about 5 minutes. Overall, from start to finish about 20 minutes for installation and set-up.

I have an Overhead Garage Door, likely 15-20 years old and this worked. Other openers continue to work once after this was installed.

I often think, did I close the garage door when I left and at time drive back to find that I did close the garage door. There was one time, when I did not close the garage door for the duration of the trip. This product will relieve the anxiety as I can check if the door is opened or closed. $100 for a piece of mind is definitely work it.

Lastly, thanks to other reviewers who reviewed this product, especially those who mentioned Overhead which gave me the confidence to buy this product.

Perfect for existing openers and need for App control and status. We always wondered did we close door. Did kids leave open when they left. We have a 2006 chamberlain liftmaster professional. Worked well and just what we needed. Fair price compared to others. Easy to install, if you read instructions. Wifi connection and phone app very easy. Install is two screws and power plugin. Door sensor is one button setup. Highly recommend.

Ceiling device connects to your home wifi.
Sensor mounts to garage door and "talks" to ceiling device.
Phone controls and monitors garage door.
We added a 2nd sensor to 2nd garage door.

Installed this yesterday. Turned out to be a bit of a hassle but everything worked out. I have a Genie Exellerator garage door opener. When going through the setup process, I chose "Genie" as the model on the MyQ app. Big mistake. It started locking up my opener and I couldn't get anything to work. Then I scrolled down the list and noticed there was an "Excellerator" selection on the list of models. Chose that one and everything started working beautifully. Moral of the story, make sure you choose the correct model in the MyQ app during setup. It could relieve a lot of headache during installation.

A word of warning. When installing the MyQ, you are basically adding a remote control to your opener. What that means is that you may need to re-program ALL of your remotes when adding the MyQ. I have 3 other remotes so when I added the MyQ, I needed to have the system re-learn the others as well.

The app is pretty simple to use. You can setup alerts to tell you when the door is opened or closed. If you install the app on several devices and login under the same account, they are basically all synched together so all devices will get the alerts. It would be nice if there was an iPad app to take advantage of the screen real estate so more settings and controls can be displayed.

So far I'm happy. It seems pretty reliable. Will update this review if I run into any major issues.

EDIT: Update May 2, 2016 - After 2 1/2 years, the MYQ system is still running flawlessly. I wanted to update my review however because I recently changed from the Genie Excelerator garage door opener to the Genie Excelerator II opener. The good news is that the transition was very easy.

All I really needed to do was simply go into the app and select up my "MyQ Place" and then select up the previous garage door opener info. Then I clicked "Select and Program Opener". The app brought up the list of brand names and as before, YOU DO NOT SELECT GENIE! Scroll down and select "Excelerator". Followed the instruction and voila! The MyQ paired perfectly with the new garage door opener. On top of that, you don't lose the history or any other settings. The new opener basically took the place of the old one. Very slick and easy.