Pat, My company manufacturers LiftMaster openers, so I'm fairly familiar with them. That said, we have not made new transmitters with DIP switches for quite some time. We may still make a few models that are purely for replacement parts, but no new Garage Door Openers have been released since I...
I work for a garage door opener company. If you can supply me some manufacturers/model #s of the openers and transmitters, I may be able to help you out.