The Resideo R845A1030 DPST Switching Relay is a dependable component that controls HVAC systems with precision. This relay, which uses a 24V AC coil, is designed to work with low voltage (Class 2) 2-wire thermostats. It has a Double Pole Single Throw (DPST) switch action, which allows it to manage several circuits at the same time, making it excellent for applications requiring simult... https://www.partshnc.com/r845a1030-resideo-dpst-switching-relay-120-24v