Rain Bird CPRSDBEX Wired Rain Sensor with Mounting Bracket and Wire Automatically shuts off and restarts sprinkler system when it rains, saving both water and money Quick and easy to adjust rainfall settings from 1/8" to 3/4" with a twist of the dial Adjustable side vent ring allows sensor to dry out once it collects water Easily connects to most irrigation system controllers Durable high-grade, UV-resistant body on an aluminum bracket easily withstands harsh environments Includes 25' of UV-resistant extension wire