Reich auto engage fob

Thesearenotthedroids

Sadly I recently made the basic mistake, I mislaid the auto engage fob. Does anyone:

1) Have one they no longer need?

2) Know of another device I can use? You can buy after market mover remotes but I can't find anyhting for the auto engage side of things. A replacement autoengage fob is seemingly expensive and there's non on eBay.

Thanks in anticipation of any help