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.

THANK`S FOR WATCHING......

Music in this video:
A Magical Journey Through Space by Leonell Cassio
https://soundcloud.com/leonellcassio
Creative Commons — Attribution-ShareAlike 3.0 Unported — CC BY-SA 3.0
Free Download / Stream: https://bit.ly/a-magical-journey-through-space
Music promoted by Audio Library https://youtu.be/DRwYhxVNwzU