The Gecko High Limit Sensor (9920-400684) is a critical safety component designed to monitor excessive temperature conditions in hot tubs and spa systems. If unsafe temperatures are detected, the sensor signals the control system to shut down heating to protect the spa and users.
This sensor is essential for maintaining safe operation and is supplied as a direct replacement for compatible Gecko control packs.
Important Notice:
Due to the nature of electrical components, temperature sensors are non-returnable and non-refundable once purchased.

