Movement explaination:

When the float ball rises or falls with the liquid to the level of the switch, The magnetic force of magnet which inside of the float ball will cause the reed switch to turn ON. When the float ball move away from the reed switch, the reed switch will turn OFF.

Application

Water fountain,air cindition,humidifier,bathroom equipment,sale machine,oil tank and chemical liquid level control.It will be widely applied in motor vehicles,industrial equipment,agricultural equipment and household appliances in the future.