Hot Spring Hi-Limit sensor

This Hi-limit sensor fits Hot Spring spas manufactured after 2002. It provides a safety cut-off if the water temperature becomes too hot due to a defect elsewhere in the control system.

This sensor screws into a fitting in the Watkins No-Fault heater, and it may also fit other models.

The manufacturer recommends that you change it at the same time as the temperature sensor because they have roughly the same life span.

Dimensions
Cable length: 96 cm
Probe diameter: 7 mm (16 mm at the thread)

Plug
2 pin

Part numbers
Hot Spring/Watkins: 39204 or 39525