Compatibility: Flow switch compatible with Intellichlor salt chlorinator models IC-15, IC-20, IC-40, and IC-60. Replaces part number 520736. Designed to protect salt and chlorine equipment. Built for durability in all 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 addresses only water flow and temperature detection for Intellichlor salt systems and does not measure salinity. It will not resolve low salt readings. Easy Installation: Compatible with 2-wire, 3-wire, and 4-wire 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 photo Material: Plastic Package Contents: 1 x flow switch Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance is ±1–3 cm.