These systems required a garage door owner to preset a digital code by switching eight to twelve DIP switches on the receiver and transmitter.
Two Door Cinema Club | garage rock | UK garage | Door County, Wisconsin | Knockin' on Heaven's Door | Behind the Green Door | Stage Door Canteen | Monster Garage | DOOR Neptunus | Door County | Trap Door Spiders | The Open Door | The Garage | Polka Dot Door | Northport, Door County, Wisconsin | Girl Next Door | Enemy at the Door | 2-step garage | The Spy Next Door | The Girls Next Door | The Garage (nightclub) | Stage Door | P-38 can opener | Mind Garage | I'm Gonna Knock on Your Door | Girl Next Door (Saving Jane song) | Garage Inc. | Back Door Man | American Garage | Who's That Knocking at My Door |