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wifi thermostats to make a cheap BMS?
I'm purchasing a small industrial building that is heated by multiple ceiling hung gas space heaters. I plan on dividing the building into several tenant spaces. Total of 5 tenant spaces plus a few common areas. Probably 8-10 zones total. I'd like to allow each tenant to control their own space heaters, but be able to remotely view and control the heaters - mainly so I can make sure that the spaces don't get too cold and freeze the sprinkler system. I know I can attach a wifi thermostat to each heater individually, but I don't know if I can:
1) view and control multiple thermostats from a single wifi app
2) allow the tenants to make limited changes to the heating via wifi to a single thermostat. In other words, I'd like them full control, but not able to reduce heat below a certain setpoint (say 50 deg).
Is this possible without installing a full building management system? I'm familiar with the Honeywell app, because I use it at my home, but I have no idea if the same system would have the level of control that I want. I see that the Honewell Total Connect app will control multiple thermostats, which looks perfect, but I don't know if I can allow the tenants to access just one thermostat and have limited control.
Any suggestions would be much appreciated.