The Functional Devices RIBTD2401B is a versatile time delay relay with a SPDT (Single Pole Double Throw) configuration and a 20A contact rating. It operates on both 24V and 120V inputs, making it suitable for various HVAC and industrial control applications. This time delay relay allows precise timing adjustments for controlling equipment start-up, shutdown. https://www.partshnc.com/ribtd2401b-functional-devices-20a-spdt-24v-120v-time-delay