float switch is a type of level sensor a device used to detect the level of liquid within a tank. The switch may be used to control a pump as an indicator an alarm or to control other devices one type of float switch uses a mercury switch inside a hinged float.
how does a float switch works
float switch is a type of level sensor a device used to detect the level of
liquid within a tank one pattern uses a reed switch mounted in a tube a float containing a magnet surrounds the tube and is guided by it when the float raises the magnet to the reed switch it closes.

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