Usage Tips:Compatibility: Flow Switch compatible for intellichlor salt chlorinator ic-15, ic-20, ic-40, ic-60 systems. number 520736. Protect your salt and chlorine equipment! They are made to last in any weather condition.Easy Connection: Flow switch with 4 button connectors, waterproof and moisture-proof, easily connect the wires at both ends. The switch come with sealant tape no leaks. The on the switch indicates the direction of the water flow to correct installation.Sensitive Detection: Red, Black/ Blue line: detect water flow. White & Green line: detect temperature. This product only solves the problem of the water flow and temperature of the Intellichlor salt system, and does not read the salinity. This will not fix a low salt reading.Easy Installation: Compatible with 2 wire, 3 wire, 4 wire cell. The wires has been strip of the flow switch. Only take several minutes make "no flow" warning light to go off.What You Will Get: You'll get 1x flow switch, 1x waterproof sealing tape, 4x button connectorColour:Photo ColorMaterial:PlasticPackage Contents:1 set x Flow Switch