Throwing out a guess too, I'm thinking a little more HVAC related. Possibly tied to a datacenter with non water based fire suppression systems. Monitoring to allow measurement of AC or other systems use. Modem (unpopulated chip wise) for possible access during a power loss for monitoring purposes, less burglar alarm based.
Tom gets closest
This building has an energy management system that's all computer controlled. The building owner called me because the software he uses to dial into the controller wasn't connecting. I found this panel, traced the lines and found that that block was loose. I got it back into place and it connected again.
In a way, you were all pretty close. His system controls the lights, HVAC, and sprinklers for the building. Pretty neat system.
I think I'll end up re-purposing the unused blocks like Glenn suggested. Then I can take the old block and maybe figure out how to get a replacement in case it's needed in the future.
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