minus-squareSmall_Oil_6031@alien.topBtoHome Automation•Do all thermostats have an R/RC?linkfedilinkEnglisharrow-up1·1 year agoNot all. RC is power for cooling and RH is power for heating. They are usually bridge together. It’s a 24V AC source. linkfedilink
Not all. RC is power for cooling and RH is power for heating. They are usually bridge together. It’s a 24V AC source.