This genuine Gecko Alliance replacement hi limit sensor cable restores reliable temperature cutoff protection for spa and hot tub heaters and control systems. Designed as an OEM replacement for Gecko control systems, the cable is 14 inches long and has a 1/4 inch probe size for accurate temperature sensing and a secure fit. Use this part to replace a failed hi limit sensor and restore safe heater operation and control board protection.

• OEM manufacturer part numbers 59-355-1015 and 9920-400122
• Length 14 inches
• Probe diameter 1/4 inch
• Function hi limit temperature cutoff for spa heaters
• Durable cable construction for wet environment use

Compatibility note Confirm compatibility with your control board and heater by matching part numbers and connector types. If you are not sure which part you need consult system documentation or your dealer.

Installation guidance Always disconnect power to the spa before servicing. Remove the failed sensor cable and install the replacement using the original mounting and connector. Route the cable away from direct heat sources sharp edges and moving parts. After installation test the circuit and verify correct operation of the heater cutoff function.

Maintenance and troubleshooting Inspect the cable periodically for signs of abrasion corrosion or damaged insulation. Replace the cable if readings are inconsistent or if the insulation is compromised. If you experience continued heater cutoff faults check control board connections and consult a certified technician.

Support For compatibility confirmation and additional technical help contact Gecko Alliance support or your authorized service provider.