The Rheem-Ruud 42-23116-06 DPST N/O Sequencing Relay 24V is a double-pole, single-throw normally open relay designed for controlled electrical sequencing in HVAC systems. Operating on 24 volts, it manages the timing of multiple heating elements or components to ensure efficient and balanced performance. Commonly used in electric furnaces and air handlers, the relay coordinates staged ... https://www.partshnc.com/24v-dpst-no-sequencing-relay-4