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 withstand 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 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 functions for Intellichlor salt systems only and does not measure salinity. 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 connector Color: As shown in photo Material: Plastic Package Contents: 1 x Flow Switch Note: Light reflection and different display settings may cause slight color variations between the image and actual item. Measurement allowance is +/- 1-3 cm.