Compatibility: Flow switch compatible with Intellichlor salt chlorinator IC-15, IC-20, IC-40, IC-60 systems. Replaces part number 520736. Helps protect your 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 at both ends. Includes sealant tape to prevent leaks. Arrow on switch indicates correct water flow direction for proper 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. Does not measure salinity and 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 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 Note: Package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.