This Gecko 9920-400446 provides a safety cut-off against the water temperature becoming too hot due to a defect elsewhere in the control system. The probe slides into the pocket on the heater tube, and the flat plastic 2-pin plug connects straight to the PCB. This is used on SSPA and MSPA-MP systems. It is very important to make sure the probe and plug are securely connected in order for it to work properly.

• Type - Standard
• Sensor Application - Spa Control
• Sensor Type - Hi Limit
• Connector Type - 2 pin
• Sensor Diameter - 1/4"
• Wire Count - 2 wire
• Wire Length - 48"

Fitment guidelines:
For use with SSPA and MSPA-MP systems.

Additional Information:
Alternate Part Numbers - 59-337-1055, GK9920400446