This contains a pressure switch to plug into the port on the IQ 2020 control box. On the control box, it will be labeled "Pressure Switch."
Made to replace a pressure switch, newer PDR heaters have an automatic cut off so one is not needed. Compatible with a variety of the 1994 to current Hot Spring Highlife, Limelight, and Tiger River spa models.
*Check specs section for full list of compatible models and years.
