I am using a PUM01 from X10
I just plug it into the same plug that garage door is plugged into and then take a wire from it and wire it into the same holes as the door buttons by the interior door and set the x10 code. I then have my elk close the door during the daytime if the door has been open for more than 1 1/2 hours or 15 minutes at night...
Works great!!
As far as the stuck outside..that is why I set it for 1 1/2 hour during the day. I also have a wireless keyfob that can raise the garage door and turn on lights outside.... hidden outside...NX-470 is the one I use
http://www.automatedoutlet.com/product.php...at=0&page=1
"Unlock the door for your kids without getting out of your seat
Keep your lawn green and healthy with automatic sprinkler control
Close the garage door without stepping outside
Experience the ultimate in convenience with X10 control of low-voltage devices like sprinkler valves, door strikes, garage door openers, thermostats and more! Depending on your application, this flexible accessory can close a contact momentarily when an ON signal is sent, or indefinitely until an OFF signal is sent. It can even beep when responding to signals, if you choose. Rated for 5A, 24VDC (15A, 120VAC if properly insulated). Responds to ALL OFF command.
Other items that may be controlled include:
Garage door openers, thermostats, electric door strikes, speakers, watering systems, telephones, drapery controls, HVAC dampers, window openers, security devices, electronic ignition fireplaces, signaling devices and more."