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Reed sensors and reed switches

Reed sensors and reed switches

Reed switches are a special design of electrical switch. They consist of a glass capsual (in the shape of a reed) filled with inert gas. Inside the capsual there are two contact surfaces. The tongue-shaped contact surfaces are pressed against each other laterally by magnetic force. As a result, the switch is closed and current flows. Thanks to their compact design the switches can be used in almost any application. A common application of reed switches is in automotive engineering, for example.