Thanks to all who have responded. I am going to get the module numbers and software versions later this week when I get back to the site.

The installer was DJJ who sold my bosses on a Lease. The system is now serviced by someone else as part of the lease.

I will get that info also as I have asked the boss to get me copy's of the contract so I can see exactly who they are and what they are responsiable for.