As promised, easy to program and install. We only have two remotes for two garage doors and it is a pain to move the remotes from one car to another. This solves the problem and can be used by a house guest or someone when they house sit instead of having to leave a house key.It also has a really cool function that allows you to program a temporary pass code which can be used by a visitor while you are away and then once you return and punch in your master code that temporary code goes bye-bye. That is a nice function if you have someone like a plumber visiting the house while you are away.I just bought another for my other garage door. I opted for two exterior remotes as they do run on a 9V battery, meaning at any time they could conk out leaving you out in the cold if this is your only method to get in the house. I figure two external remotes will solve that potential problem. You can buy Genie remotes that will open two or three different doors from one remote however, I think its well worth $25.00 for the piece of mind that dual remotes will provide.Should have bought this years ago. A must have for anyone with garage doors.