Connections: The probe slides into the pocket on the heater tube. The red flat plastic 4-pin plug (3 wires) connects directly to the PCB.

Dimensions: Diameter: 6 mm. Cable Length: 305 mm or 12 inches.

Commonly Used With: This sensor is commonly used with Gecko, Spa Builders, and Hydroquip control boxes. It is found in tubs such as Arctic Spa, Coyote Spa, Dimension One, Sunrise, Hotspot, Gulf Coast, LA Spas, Artesian Spas, Inspirations, Hydrospa, Southwest Spas, and more.

Additional Notes: This probe is NOT for use with Gecko SSPA systems or the Gecko MSPA Metapac (MP) series. It is only compatible with MSPA 1, 2, or 4 systems. It also works with TSPA and some Spa Builders and Hydroquip systems. If uncertain, please call for clarification.
Note: The plug shown is for illustration purposes only. The actual plug included with this sensor is a red, 4-socket flat connector with 3 wires (usually black, green, and red, although colors may vary).

Gecko Hi Limit Sensor Probe 9920-400122

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Brand: Gecko
Product Type: Sensor Probe
Sensor Function: Hi Limit
Connections: The probe slides into the pocket on the heater tube. The red flat plastic 4-pin plug (3 wires) connects directly to the PCB.

Dimensions: Diameter: 6 mm. Cable Length: 305 mm or 12 inches.

Commonly Used With: This sensor is commonly used with Gecko, Spa Builders, and Hydroquip control boxes. It is found in tubs such as Arctic Spa, Coyote Spa, Dimension One, Sunrise, Hotspot, Gulf Coast, LA Spas, Artesian Spas, Inspirations, Hydrospa, Southwest Spas, and more.

Additional Notes: This probe is NOT for use with Gecko SSPA systems or the Gecko MSPA Metapac (MP) series. It is only compatible with MSPA 1, 2, or 4 systems. It also works with TSPA and some Spa Builders and Hydroquip systems. If uncertain, please call for clarification.
Note: The plug shown is for illustration purposes only. The actual plug included with this sensor is a red, 4-socket flat connector with 3 wires (usually black, green, and red, although colors may vary).
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