Description float sensor is an electrical on/off switch, Which operates automatically when liquid level goes up or down in relation to specified level. The signal thus available from the float device capable of sensing utilized for the management of a motor pump or an allied electrical element like solenoid, Lamps, And relays etc. Float sensors contain hermetical sealed reed switch in the stem and a permanent magnet in the float. As the float rises or falls with the quality of liquid the reed switch is activated by magnet in the float. Working available either change over, Normally close, Normally open contact form. Application house hold equipments such as overhead water tanks, Water purifiers.