Compatibility: Flow Switch compatible with Intellichlor salt chlorinator IC-15, IC-20, IC-40, IC-60 systems. Replaces part number 520736. Helps protect salt and chlorine equipment. Designed to last in various weather conditions. Easy Connection: Flow switch features 4 button connectors, waterproof and moisture-resistant design for secure wire connections. Includes sealant tape to prevent leaks. Flow arrow indicates water direction for correct installation. Sensitive Detection: Red, Black/Blue wires detect water flow. White and Green wires detect temperature. This product addresses water flow and temperature issues for Intellichlor salt systems only and does not measure salinity. It will not resolve low salt readings. Easy Installation: Compatible with 2-wire, 3-wire, and 4-wire cells. Pre-stripped wires allow quick connection. Installs in minutes to eliminate "no flow" warning light. What You Will Get: 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 with sealing tape and connectors Note: Light reflection and display differences may cause slight color variations between image and actual item. Measurement may vary by +/- 1-3 cm.