What you need is a 'wall control' and what the door people recommended was a wireless keypad which is not the same at all. The one you say looks exactly like the one you have is what you need. The only thing is the wiring is not showing in the picture. It will have 2 wires going from it to the opener. The reason those first 2 numbers don't come up with anything is because they are part numbers. The model number for the opener should be on the end of the opener closest to the garage door.

Thanks. Have ordered the correct part...I think, I hope. Will let you know.