{"product_id":"hayward-cat-controller-orp-sensor-probe-24-inch-cable","title":"Hayward CAT Controller 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 { margin: 0 0 1rem; }\n  .product-description ul { margin: 0 0 1rem 1.4rem; padding: 0; }\n  .product-description ul li { margin-bottom: 0.4rem; }\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 { border-bottom: none; }\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 { background-color: #f5f9ff; }\n  .product-description .spec-row:nth-child(even) .spec-key { background-color: #edf4fc; }\n  @media (max-width: 540px) {\n    .product-description .spec-key,\n    .product-description .spec-val { flex: 0 0 100%; }\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 { margin: 0 0 0 1.2rem; }\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 ORP Sensor Probe 24 Inch Cable Pool Controls\"\u003e\n  \u003cmeta itemprop=\"brand\" content=\"Hayward\"\u003e\n  \u003cmeta itemprop=\"category\" content=\"Pool Controls\"\u003e\n  \u003cmeta itemprop=\"sku\" content=\"W3PRO25-2\"\u003e\n\n  \u003cp itemprop=\"description\"\u003eHayward CAT Controller ORP Sensor Probe, 24-inch cable (W3PRO25-2). OEM replacement ORP electrode for Hayward CAT and HCC series chemical automation pool controls. 1\/2\" NPT ABS body, BNC connector. 2-year warranty. For compact equipment rooms where the controller and flow cell are in close proximity.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eSKU: W3PRO25-2\u003c\/li\u003e\n    \u003cli\u003e2-year warranty\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; same BNC connector and port threading as factory-installed probe\u003c\/li\u003e\n    \u003cli\u003e1\/2\" NPT injection-molded ABS body\u003c\/li\u003e\n    \u003cli\u003eVerify against a calibrated portable ORP meter after installation; agreement within 10 to 20 mV is acceptable\u003c\/li\u003e\n    \u003cli\u003eORP setpoint target: 650 mV or above per CDC Model Aquatic Health Code\u003c\/li\u003e\n    \u003cli\u003eDo not extend or splice the cable; added impedance distorts the millivolt signal\u003c\/li\u003e\n    \u003cli\u003eRecommended replacement interval: every 12 to 24 months\u003c\/li\u003e\n    \u003cli\u003eNeed a gold tip for demanding environments? See W3PRO25-AU-2\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHayward CAT Controller ORP Probe (W3PRO25-2): ORP Monitoring for CAT and HCC Series Pool Controls\u003c\/h2\u003e\n  \u003cp\u003eThe W3PRO25-2 is the standard ORM replacement probe for Hayward CAT and HCC series chemical automation. The 24-inch cable suits compact installations where the flow cell and controller cabinet are side by side. Measures oxidation-reduction potential continuously; the CAT controller uses this millivolt signal to trigger and shut off chlorine dosing in a closed loop. No adapters or controller reconfiguration required after swap. Install in a flow cell or bypass sample cell on the return line, downstream of filtration and chemical injection.\u003c\/p\u003e\n\n  \u003ch2\u003e24-Inch vs. 10-Foot Cable: Which Length Do You Need?\u003c\/h2\u003e\n  \u003cp\u003eMeasure the routed cable path from the flow cell ORP port to the controller's ORP input terminal before ordering. The 24-inch version is appropriate when that distance is 18 to 22 inches with service slack. For longer runs, use the 10-foot version (W3PRO25-10). Never splice or extend this cable.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward CAT 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\"\u003eW3PRO25-2\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\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\"\u003eVerification\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCompare controller display against portable ORP meter; within 10 to 20 mV is acceptable\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eFlow cell or bypass sample cell on pool return line, after filtration\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBest-Fit Installation\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCompact equipment rooms; controller and flow cell in close proximity\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\u003eWhat is the difference between this probe and the 10-foot cable version?\u003c\/h3\u003e\n  \u003cp\u003eThe sensing element, electrode material, and BNC connector are identical. The only difference is cable length. Measure the routed cable path before ordering; use the 10-foot version (W3PRO25-10) if the run exceeds 22 inches.\u003c\/p\u003e\n\n  \u003ch3\u003eDoes the CAT controller need to be reprogrammed after a probe swap?\u003c\/h3\u003e\n  \u003cp\u003eNo. ORP setpoints and dosing parameters remain in effect. After installation, verify the reading against a portable ORP meter and adjust the controller's ORP offset if a small consistent discrepancy is present.\u003c\/p\u003e\n\n  \u003ch3\u003eShould I replace the pH probe at the same time?\u003c\/h3\u003e\n  \u003cp\u003eReplacing both probes at the same service interval is the most efficient approach and renews the full sensor pair simultaneously.\u003c\/p\u003e\n\n  \u003ch3\u003eWhen should I use the gold tip version instead?\u003c\/h3\u003e\n  \u003cp\u003eThe gold tip (W3PRO25-AU-2) is better suited to indoor pools, therapy pools, and high-bather-load facilities where elevated combined chlorine is a recurring issue. For standard outdoor commercial pools with well-balanced chemistry, this standard platinum version is appropriate.\u003c\/p\u003e\n\n  \u003cdiv class=\"doc-links\" role=\"complementary\" aria-label=\"Hayward CAT Controller ORP Sensor Probe 24-Inch Cable Manual and Warranty Info\"\u003e\n    \u003ch2\u003eHayward CAT Controller ORP Probe 24-Inch Manual and Warranty Info\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-controller-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-orp-probe-24in-verification-procedure.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMillivolt Verification \u0026amp; Offset Adjustment Procedure (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-series-orp-probe-cable-selection-and-routing-guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eORP Probe Cable Length Selection \u0026amp; Equipment Room Routing 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 ORP Sensor Probe 24 Inch Cable Pool Controls\",\n    \"brand\": { \"@type\": \"Brand\", \"name\": \"Hayward\" },\n    \"description\": \"OEM ORP replacement probe for Hayward CAT and HCC series chemical automation pool controls. SKU W3PRO25-2. 24-inch cable for compact equipment rooms, BNC connector, 1\/2\\\" NPT ABS body. Compatible with CAT1000, 3500, 4000, 5000, 5500, HCC1000, HCC2000. 2-year warranty. Recommended replacement every 12 to 24 months.\",\n    \"sku\": \"W3PRO25-2\",\n    \"category\": \"Pool Controls\",\n    \"offers\": {\n      \"@type\": \"Offer\",\n      \"availability\": \"https:\/\/schema.org\/InStock\",\n      \"priceCurrency\": \"USD\",\n      \"seller\": { \"@type\": \"Organization\", \"name\": \"Your Store Name\" }\n    }\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48566407299289,"sku":"W3PRO25-2","price":429.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/3592\/7513\/files\/hayward-logo.jpg?v=1731006221","url":"https:\/\/nonstopswim.com\/products\/hayward-cat-controller-orp-sensor-probe-24-inch-cable","provider":"Nonstop Swim","version":"1.0","type":"link"}