Please note: slight color differences due to lighting and display settings may occur. This does not affect product functionality. The GLX-FLO Flow Switch includes 1x GLX-FLO Pool Flow Sensor Assembly Kit. The kit includes a flow switch and cable. The GLX-FLO Flow Switch monitors water flow through the brine system to ensure chlorine generation only occurs when water is flowing, preventing the buildup of hazardous chlorine gas in the pool plumbing system. Proper installation is required to avoid safety risks. Made from high-quality materials, the GLX-FLO flow switch is durable, resistant to wear, and built for long-term performance. The sturdy flow sensor reliably monitors water flow rates in your pool system, helping prevent chlorine accumulation and protecting your pool equipment from damage. This flow switch is compatible with all salt chlorine generator systems for Hayward Goldline. Suitable as a replacement for the following chlorinators: Aqua Rite Electronic Chlorine Generators (all models), Naturesoft Water Purification System (all models), Mineral Springs (all models), Aqua Trol Above Ground Pool Automation (all -HP models), and SplashCLEAR (all models except -RJ versions). Designed to fit Hayward models: GLX-FLO-RP, GLX-FLO-RP2, GLX-FLO-RP3, GLX-FLO-RP4, GLX-FLO-HP, Q-12DS-C2, OPT-F/S. Color: As shown. Material: Plastic. Package Contents: 1 x Flow Switch Assembly for Hayward (includes cable). Note: The package includes only the items listed above. Measurement error allowed is +/- 1-3 cm.