The Raypak 016502F Wire Harness In/Out Sensor 302C-23 is a genuine replacement wiring harness designed to connect the inlet and outlet temperature sensors to the control system in Raypak Hi Delta hydronic boilers. It carries sensor signals accurately between the cabinet sensors and the controller, supporting proper temperature monitoring and boiler operation. https://www.partshnc.com/raypak-016502f-wire-harness-in-out-sensor-302c-23