Seamless Compatibility: Precision-engineered to fit Intellichlor models IC15, IC20, IC40, and IC60, this flow switch is the perfect replacement for part number 520736, delivering the reliability and efficiency your system requires. Advanced Detection: Equipped with sophisticated sensors, the switch monitors water flow (red and blue wires) and temperature (white and green wires) in your saltwater chlorination system, enhancing system reliability by ensuring critical parameters are met. Installer-Friendly: Designed for easy installation, this flow switch is compatible with 2, 3, and 4-wire systems. Includes secure button connectors for a moisture-resistant connection, simplifying setup. High Compatibility: Meticulously crafted for optimal performance with Intellichlor equipment, ensuring your saltwater chlorination system operates smoothly with minimal maintenance. Note: Slight color variations due to lighting or display differences may occur and do not affect functionality. Color: Black & White Material: Plastic + Metal Package Contents: 1 x Swimming pool flow switch 1 x Raw material belt (random color, no specific color guaranteed) 4 x Terminals Only the above items are included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement may vary by +/- 1-3 cm.