FYI:
Just had this die on me after having it in my garage for about a year.
The beep for opening and closing became muffled and choppy. And the door did nothing after the beeps. When I opened the door manually with the button on the wall, the tilt sensor still recognized opened and closed. I unplugged it and then plug it back in. Still same results.
I called go control, and they are sending me a replacement. Free of charge after I provided a copy of the receipt from Amazon.