Usage Tips:Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! [GLX-FLO Flow Switch]---Includes 1x GLX-FLO Pool Flow Sensor Assembly Kit. The kit includes a flow switch, cable. GLX-FLO Flow Switch monitors the flow of water through the brine system to ensure that the brine system produces chlorine gas after the water has flowed through the pool. Failure to properly install a flow switch can result in the explosive gas chlorine building up in the pool plumbing system. [Premium Material & Excellent Performance]---GLX-FLO flow switch is made of ly material, which is not easy to break and wear out, and has a long service life. The flow sensor is sturdy and durable, and effectively monitors the water flow rate of your pool system to ensure that chlorine does not build up, thus protecting the pool and equipment from any damage . [Widely Compatibility]---Pool Flow Switch GLX-FLO is compatible for all the salt chlorine generator systems for Hayward Goldline. Replacement flow switch for use on 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) SplashCLEAR (all models except -RJ versions). It's designed to fit for 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 with cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.