406-388-17four3 I have two garage door openers one has a broken spindle that can be replaced the other is good to go but you would have to swap out the rail for it. Both are chain drive. I intended to put the two together and get one functioning unit but decided to go a different route. You can have the whole thing for $75. The broken spindle unit has many cycles on it but it's still working. The red unit has very few Cycles on it but it's been in storage for quite a while. Don’t buy these unless you are mechanically inclined enough to swap parts and get it working. I have the wall button for it, also a outdoor keypad remote, and one 3 button remote. I don't have the safety sensors, but you can buy them at Home Depot, or Habitat for Humanity, Etc