this is a brand new air conditioner temperature controller. it has a 17" long temperature probe to sense the room air temperature. the circuit board seems to be powered by 24 vac, and has two terminals for power, one is neutral, other must be the hot. two neutral terminals actually. three terminals for the fan, low, med, and high. two terminals on the compressor relay, a common and no, that relay is 30a @ 240 vac. the fan relays are 10a@ 125 vac. nice cooling controller for your projects or upgrade a window unit! sold as is for projects and parts no returns because you suddenly decided you did not want it!