Overview: I have a Secure SRT321 room thermostat in my living room, and up until now the only function that it has performed is as a temperature sensor.  Changing the temperature on the thermostat has had no effect.  I haven't associated it with my boiler switch, as I've implemented a multi-room system.  In theory, I should be able to associate the thermostat with the Danfoss LC-13 radiator valves in that room, but that doesn't seem to work.  However, what I really wanted to do is to overri