Editing Rain sensor (section)

{{Short description|Device to detect water from rain}}
[[File:Regensensor1.JPG|thumb|Rain sensor on the [[windshield]] of a car]]
A '''rain sensor''' or '''rain switch''' is a switching device activated 
by rainfall. There are two main applications for rain sensors. The first is a [[water conservation]] device connected to an automatic [[irrigation]] system that causes the system to shut down in the event of rainfall. The second is a device used to protect the interior of an automobile from rain and to support the automatic mode of 
[[windscreen wipers]].