{"product_id":"hayward-cat-controller-gold-orp-sensor-probe-24-inch-cable","title":"Hayward CAT Controller Gold ORP Sensor Probe 24 Inch Cable","description":"\u003c!-- more --\u003e\n\u003cstyle\u003e\n  .product-description {\n    color: inherit;\n    line-height: 1.75;\n    max-width: 860px;\n  }\n  .product-description h2 {\n    font-size: 1.2rem;\n    font-weight: 700;\n    margin: 2rem 0 0.6rem;\n    border-bottom: 2px solid #cce0ff;\n    padding-bottom: 0.3rem;\n  }\n  .product-description h3 {\n    font-size: 1rem;\n    font-weight: 700;\n    margin: 1.5rem 0 0.4rem;\n  }\n  .product-description p {\n    margin: 0 0 1rem;\n  }\n  .product-description ul {\n    margin: 0 0 1rem 1.4rem;\n    padding: 0;\n  }\n  .product-description ul li {\n    margin-bottom: 0.4rem;\n  }\n  .product-description .spec-list {\n    margin: 1rem 0 1.5rem;\n    font-size: 0.95rem;\n    border: 1px solid #c4d9f0;\n    border-radius: 4px;\n    overflow: hidden;\n  }\n  .product-description .spec-row {\n    display: flex;\n    flex-wrap: wrap;\n    border-bottom: 1px solid #c4d9f0;\n  }\n  .product-description .spec-row:last-child {\n    border-bottom: none;\n  }\n  .product-description .spec-key {\n    flex: 0 0 38%;\n    background-color: #e8f1fb;\n    font-weight: 700;\n    padding: 0.5rem 0.75rem;\n    box-sizing: border-box;\n  }\n  .product-description .spec-val {\n    flex: 1 1 62%;\n    padding: 0.5rem 0.75rem;\n    box-sizing: border-box;\n  }\n  .product-description .spec-row:nth-child(even) .spec-val {\n    background-color: #f5f9ff;\n  }\n  .product-description .spec-row:nth-child(even) .spec-key {\n    background-color: #edf4fc;\n  }\n  @media (max-width: 540px) {\n    .product-description .spec-key,\n    .product-description .spec-val {\n      flex: 0 0 100%;\n    }\n    .product-description .spec-key { padding-bottom: 0.2rem; }\n    .product-description .spec-val { padding-top: 0.2rem; }\n  }\n  .product-description .doc-links {\n    background-color: #f0f6ff;\n    border-left: 4px solid #0066cc;\n    padding: 0.75rem 1rem;\n    margin: 1.5rem 0;\n    border-radius: 0 4px 4px 0;\n  }\n  .product-description .doc-links h2 {\n    border-bottom: none;\n    margin: 0 0 0.4rem;\n    font-size: 1rem;\n    padding-bottom: 0;\n  }\n  .product-description .doc-links ul {\n    margin: 0 0 0 1.2rem;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"product-description\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n  \u003cmeta itemprop=\"name\" content=\"Hayward CAT Controller Gold ORP Sensor Probe 24 Inch Cable\"\u003e\n  \u003cmeta itemprop=\"brand\" content=\"Hayward\"\u003e\n  \u003cmeta itemprop=\"category\" content=\"Pool Controls\"\u003e\n  \u003cmeta itemprop=\"sku\" content=\"W3PRO25-AU-2\"\u003e\n\n  \u003cp itemprop=\"description\"\u003eHayward CAT Controller Gold ORP Sensor Probe, 24-inch cable (W3PRO25-AU-2). Gold sensing tip for enhanced millivolt stability in high-bather-load and indoor commercial pool applications. Direct replacement for all Hayward CAT and HCC series controllers. 1\/2\" NPT ABS body, BNC connector. 2-year warranty.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eSKU: W3PRO25-AU-2\u003c\/li\u003e\n    \u003cli\u003e2-year warranty\u003c\/li\u003e\n    \u003cli\u003eGold sensing tip: resists surface oxidation and fouling from combined chlorine better than standard platinum\u003c\/li\u003e\n    \u003cli\u003e24-inch cable for compact equipment rooms where controller and flow cell are in close proximity\u003c\/li\u003e\n    \u003cli\u003eCompatible with CAT1000, CAT3500, CAT4000, CAT5000, CAT5500, HCC1000, HCC2000\u003c\/li\u003e\n    \u003cli\u003eDirect replacement for standard ORP probe; no controller reconfiguration required\u003c\/li\u003e\n    \u003cli\u003e1\/2\" NPT ABS injection-molded body; BNC connector\u003c\/li\u003e\n    \u003cli\u003eBest for indoor pools, therapy pools, high-bather-load commercial facilities, and any installation with recurring combined chlorine challenges\u003c\/li\u003e\n    \u003cli\u003eDo not extend or splice the cable; added impedance distorts the millivolt signal\u003c\/li\u003e\n    \u003cli\u003eVerify against a calibrated portable ORP meter after installation\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHayward CAT Controller Gold ORP Probe (W3PRO25-AU-2): Gold vs. Platinum for Commercial Pool Controls\u003c\/h2\u003e\n  \u003cp\u003eGold electrodes resist the surface oxide formation and combined-chlorine fouling that can cause platinum probes to drift off the pool's true ORP value over time. In standard outdoor pools with well-balanced chemistry, platinum performs reliably. In indoor pools, therapy pools, and high-bather-load facilities where combined chlorine accumulates faster, the gold surface maintains reading accuracy longer and reduces calibration frequency. Drop-in replacement for the standard ORP probe; same flow cell port, same BNC connector, no software changes needed.\u003c\/p\u003e\n\n  \u003ch2\u003e24-Inch Cable: Is It the Right Length?\u003c\/h2\u003e\n  \u003cp\u003eMeasure the actual routed cable path from the flow cell ORP port to the controller's ORP input terminal before ordering. The 24-inch version suits installations where that distance is 18 to 22 inches with a few inches of service slack. If the run is longer, use the 10-foot cable version. Never splice or extend this cable.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward CAT Gold ORP Probe 24-Inch Specifications\u003c\/h2\u003e\n  \u003cdiv class=\"spec-list\"\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSKU\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eW3PRO25-AU-2\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSensing Element\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eGold tip with integrated reference junction\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eMeasurement\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eORP (oxidation-reduction potential), millivolts\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCable Length\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e24 inches (2 feet)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eConnector\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eBNC (color-coded)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBody\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e1\/2\" NPT injection-molded ABS\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCompatible Controllers\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCAT1000, CAT3500, CAT4000, CAT5000, CAT5500, HCC1000, HCC2000\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eGold Advantage\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eReduced surface fouling in high-combined-chlorine, indoor, and variable-load environments\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBest-Fit Application\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eIndoor pools, therapy pools, high-bather-load commercial facilities\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eORP Target (commercial)\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e650 mV or above per CDC Model Aquatic Health Code\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eReplacement Interval\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eEvery 12 to 24 months\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e2-year\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003ch3\u003eWhy choose gold over the standard platinum probe?\u003c\/h3\u003e\n  \u003cp\u003eGold resists the surface oxide layer that forms on platinum in chlorinated water with elevated combined chlorine, which can cause the platinum probe to settle at a millivolt reading that no longer reflects true oxidizing capacity. In demanding environments, gold holds accuracy longer between service intervals.\u003c\/p\u003e\n\n  \u003ch3\u003eIs this a drop-in replacement for the platinum ORP probe?\u003c\/h3\u003e\n  \u003cp\u003eYes. Same flow cell port threads, same BNC connector, no controller reconfiguration needed. Verify the reading against a portable ORP meter after installation as you would with any probe swap.\u003c\/p\u003e\n\n  \u003ch3\u003eShould I replace the pH probe at the same time?\u003c\/h3\u003e\n  \u003cp\u003eReplacing both probes in a single service visit is the most efficient approach and ensures the full measurement pair is renewed simultaneously.\u003c\/p\u003e\n\n  \u003cdiv class=\"doc-links\" role=\"complementary\" aria-label=\"Hayward CAT Controller Gold ORP Sensor Probe 24-Inch Cable Manual and Warranty Info\"\u003e\n    \u003ch2\u003eHayward CAT Controller Gold ORP Probe 24-Inch Manual and Warranty Info\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-controller-gold-orp-probe-24in-installation-guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation \u0026amp; Flow Cell Plumbing Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-controller-gold-orp-probe-24in-verification-procedure.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMillivolt Verification \u0026amp; Reference Meter Comparison Procedure (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-series-gold-vs-platinum-orp-probe-selection-guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eGold vs. Platinum ORP Probe Selection Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\/\",\n    \"@type\": \"Product\",\n    \"name\": \"Hayward CAT Controller Gold ORP Sensor Probe 24 Inch Cable\",\n    \"brand\": { \"@type\": \"Brand\", \"name\": \"Hayward\" },\n    \"description\": \"Gold tip ORP replacement probe for Hayward CAT and HCC series pool chemical controllers. SKU W3PRO25-AU-2. 24-inch cable, BNC connector, 1\/2\\\" NPT ABS body. Enhanced millivolt stability in high-combined-chlorine, indoor, and high-bather-load commercial pool environments. 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