Aillsa Rain Sensor Hygroscopic Discs Replacement -Repair 1 sensors,Fits for Hunter/Mini-Clik/Toro/Irritrol/Rain Bird Rain Sensor

Package includes a set 8 piece fix of hygroscopicdiscs capable of repair 1 Rain Bird rain sensors. Works with all RainBird Rain Sensors - RSD, WR2 Wireless and fits for all Hunter Rain Sensors, Mini-Clik, Rain-Clik, Solar Sync. How Hygroscopic discs works : The way this rain sensor works is that when rain hits these discs, they expand and push a switch off that is connected to the controller. When it stops raining and the discs dry out, they contract back to the original size and release the switch. If these discs get excessively dirty, or have bugs living in and around them, they might not function properly. Easy to replace?You just need to open the rain sensor cap, remove the failed discs, and replace with these new moisture discs,Just take about 5 minutes repair without tools. Aillsa is a professional manufacturer of rain sensor and irrigation system parts. Strict material selection and workmanship are the guarantee of the excellent quality of our products. If you have any questions about these replacement discs for the Rain Bird rain sensor, please contact us.we will reply you within 24 hours, thank you very much.