microswitch
noun
mi·cro·switch ˈmī-krō-ˌswich 
: a very small switch that is sensitive to minute motions and is used especially in automatic devices
Example Sentences
Recent Examples on the Web The membrane buttons have been replaced with professional-grade microswitch buttons and a mechanically-clicky D-pad. 
Anthony Karcz, Forbes, 16 June 2022
Anthony Karcz, Forbes, 16 June 2022 Word History
First Known Use
1940, in the meaning defined above
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