I have an old radiator in my apartment with a giant metal wire and bar coming out of it, The radiator gets hot for a bit than once a temperature is met in the apartment it shuts of (maybe)
Does that device measure temperature? with one wire?
I will use an arduino to measure the temperature across the room, than send the info to an arduino at the knob. leaving the knob at only one setting.
How would I send a signal to flip the switch inside the knob to turn the radiator on and off?
I can take it apart a bit more but might have to shut off the water.