Wanted: Datatool Stealth Alarm Remote and/or Advice

I’ve a project bike with a Datatool Stealth alarm from 1995.

The bike & remote batteries are flat & I’ve only got one remote.

Does any one have a remote spare somewhere, know if can be upgraded by changing just the box or can recommend a place to go to (I’ve Googled but not got much joy).

Cheers,

Ian
0791 2649790
[email protected]