The Prince Castle 65-048-07S 120V Relay provides reliable electrical control for compatible compressor systems. Designed for 120V operation, it works as an electrically controlled switch that opens or closes the circuit to regulate power supplied to the compressor. A functioning relay supports consistent compressor operation, dependable switching, and stable equipment performance. https://partsfe.com/65-048-07s-prince-castle-relay-compressor-120v