Therma-Matic ??????

Therma-Matic first time. I did an inspection on an older condo and found this controller by the front door. I have never seen one before and a Google search was no help, any ideas? The home had three wall mounted oil filled heaters with there own integral thermostats. There were wall thermostats in each room but no obvious heat source.

**Could be radiant electric heat. There is one apartment complex in our town that has them. **