Sears Craftsman 139.53879 Garage Door Opener 3 button remote

This Craftsman 139.53879 remote control is compatible with Craftsman, Liftmaster, Do-It, Master-Mechanic, Raynor, and Chamberlain garage door openers using billion code technology, and made between 1993-2004. If your opener has a green learn button on the back/side of the powerhead, or the original remote has grey buttons, this control should work. Systems with other types of coding will NOT be compatible. This was purchased for my friends mom, but she never drove anywhere, so it has been used only a handful of times. Works perfectly.