I've got a single zone which covers all three upstairs bedrooms in my home and the thermostat is located in the master bedroom. We prefer it to be somewhat cooler at night, but the baby in the nursery would be better off with a warmer room. (We have a hydronic system with baseboard radiators, just heat no cooling.)
Moving it is doable since I have attic access, but it seems like an easier solution would be to use some kind of wireless system - the temperature sensor would go in the nursery while the "brains" would connect in the master bedroom in place of the existing thermostat.
I searched for such an animal on Amazon and didn't really come up with anything at a reasonable price. Can anyone suggest a product that they've used? If it's more than $100 I'll probably just physically relocate it... but it really seems like something like this should exist!