North Shore Commercial Door NSCD-300MK1 Keychain Remote (Not Universal Works Only with 300MHZ 10 Dip Switch Systems) Versatile  This economically priced Multi Code 300MHz compatible mini remote will work on any 300MHZ Multi Code receiver Powerful  This mini keychain remote tests at ranges close to 100 feet Sturdy  This mini remote is made to last and comes with a 3-year warranty from the 35-year garage and commercial door opener pros at North Shore Commercial Door Easy to Program  Program the 10 dip switches just like you did with your original Compact  Its just 2 1/4 tall and 1 5/16 wide