The Float Level Switch is a liquid level control device with a simple structure. It does not require a power supply and has no complex circuits. Working Principle: The Liquid Level Sensor mainly consists of a magnetic reed switch and a float ball. There is a magnetic material in the float ball. One or more magnetic reed switches are set in a sealed non-magnetic metal tube or plastic tube. Fixed rings control the float ball and the magnetic reed switch in the relevant positions. As the float rises or falls with the liquid, the contact near the magnetic reed switch produces an on and off action for liquid level control. Model: Side-Mounted Float Switch Colour: As shown Material: PP Package Contents: 1 * Side Mounted Float Switch. Only the above package content, other products are not included. Note: Different batches may have differences in product appearance, color, and printed characters. Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3cm.