Compatibility: Flow switch compatible with Intellichlor salt chlorinator models IC-15, IC-20, IC-40, and IC-60. Replaces part number 520736. Helps protect your salt chlorine generator system. Designed for durability in various weather conditions. Easy Connection: Flow switch features four button connectors, is waterproof and moisture-resistant, and allows simple wire connection at both ends. Includes waterproof sealing tape to prevent leaks. An arrow on the switch indicates water flow direction for correct installation. Sensitive Detection: Red and black/blue wires detect water flow. White and green wires detect temperature. This product monitors water flow and temperature for Intellichlor salt systems only. It does not measure or adjust salinity levels and will not resolve low-salt readings. Easy Installation: Compatible with 2-wire, 3-wire, and 4-wire chlorine cells. Wires are pre-stripped for quick setup. Installation typically takes only a few minutes to clear the “no flow” warning light. What’s Included: 1 x Flow Switch, 1 x Waterproof Sealing Tape, 4 x Button Connectors. Color: As shown in product images. Material: Plastic. Package Contents: 1 x Flow Switch. Note: Colors may vary slightly due to screen settings and lighting conditions. Measurements may vary by ±1–3 cm.