I installed a Belkin Wemo Maker on my garage door and it works well with open/close sensor (magnetic reed switch).



That looks good. I presume it can trigger a low voltage switch which is what the garage door opener uses? I just have a switch on the wall that when triggered closes a switch on the motor and triggers open/close. The open/close sensor would be useful (links?) if it could be read by an app.



I got one of these reed switches:


Here is the Belkin Wemo app:


It simulates a button press by connecting the two wires together just like a normal garage door button on your wall. I just connected the relay from the wemo to the exact same wire inputs the wall button uses (but directly on the garage door opener itself).