HC15 Manual thermostat in classic design with main switch on the front Simple operation – dial on the front panel On/Off switch on the front panel Room temperature can be adjusted via the dial. The floor temperature is measured by a floor sensor included in the package. The thermostat is white (RAL 9003) and will fit nicely into any room. HC15 is suitable for all types of rooms and is often preferred in spaces with changing occupants (hotels, vacation homes, etc.) due to its easy operation.