Zodiac Jandy Pro Series Ji2000 4-Wire Water Sensor (4019+)

Control System Parts
Zodiac/Jandy/Laars
4019
59-100-2102
COMPARE AT $264.99
OUR PRICE $211.99
STOCK STATUS IN STOCK Ships Usually the Same/Next Business Day
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$9.88 Standard Shipping
Under 25 lbs. Contiguous USA
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The Ji2000 4-wire water sensor provides temperature or water condition feedback for compatible Jandy control systems, depending on the installation. Accurate sensor data helps the automation system make better decisions for heater operation, display readings, and equipment control. When readings are erratic, inaccurate, or missing, the sensor and cable should be checked before assuming a controller failure. This replacement is intended for systems requiring the 4-wire version. Verify 4019+ against the original sensor, cable route, and control board terminals before installation. For best results, compare 4019+ with the equipment label and existing wiring or service diagram before installation, since heater and control repairs often depend on exact model series, voltage, and revision details.

Zodiac / Jandy / Laars – Pool Pumps, Heaters, Filters, Automation and Replacement Parts
Who is Zodiac / Jandy / Laars?

Zodiac, Jandy, and Laars are leading brands in the pool and spa industry, now part of the same global portfolio, offering premium pool equipment and advanced water system solutions. Known for innovation, performance, and reliability, these brands serve both residential and commercial pool markets worldwide.

What products does Zodiac / Jandy / Laars specialize in?

Zodiac / Jandy / Laars specialize in pool pumps, heaters, filters, automation systems, cleaners, and replacement parts. Their product lineup includes energy-efficient pumps, high-performance heaters, advanced filtration systems, and smart automation controls designed to simplify pool operation and maintenance.

Why choose Zodiac / Jandy / Laars parts for your pool or spa?

These brands are known for premium quality, advanced technology, and long-lasting performance. Their systems are engineered for efficiency, durability, and seamless integration, making them a preferred choice among pool professionals and homeowners. Customers choose Zodiac, Jandy, and Laars for dependable equipment that enhances water quality, comfort, and control.

How do you identify and choose the correct Zodiac / Jandy / Laars part?

To select the correct component, it’s important to match your equipment model, system specifications, and part number. Reviewing product manuals and compatibility ensures proper fit and performance. Choosing the right part helps maintain efficient operation and extends the life of your pool system.

Need help finding the right Zodiac / Jandy / Laars part?

At Bath & Spa Parts Online, we carry a wide selection of Zodiac / Jandy / Laars pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.

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