Residential Irrigation System Rainfall Shutoff Devices


Rain sensors—also called rain shut-off devices—are designed to interrupt the cycle of an automatic irrigation system controller when a specific amount of rainfall has occurred. They are small devices wired to the irrigation system controller and mounted in an open area where they are exposed to rainfall.

Some of the new irrigation controllers have a special connection which allows a rain sensor to be attached directly. If such a shut-off device is not available, or the sensor doesn’t work with a given controller, the sensor can always be “hard-wired” into the controller.

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