Gemini Receiver door lock remote broken

[infinity]

Does anybody have one spare lying around or is that too difficult to pair with my remote?

It is a '94 500.

Alternatively; what would be a good system to substitute it with? I don't need the immobiliser, it's just to lock and unlock the doors.

Thanks in advance.

(The remote unit is still OK, it's just the receiver-part in the car.)