Pressure switch
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A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure
Murphy oil pressure gauges with switches that activate on low pressure
Electrical pressure switch with integrated connector
Miniature snap-action switch
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A miniature snap-action switch, also trademarked and frequently known as a micro switch or microswitch, is an electric switch that is actuated by very little physical force, through the use of a tippi
Comparison of some different switches
The internals of a micro switch. Contacts, from left to right, are common, normally open, and normally closed.