Reed switches are used in many applications requiring the sensing or monitoring of single, multiple or continuous liquid levels. A permanent magnet, molded into the float ring will activate the reed switches as the float moves up and down the sensor assembly in relation to the liquid level. As each switch is activated, the status LED will change color to indicate the current liquid level. Liquid level sensors using reed switch technology have many uses in detecting water, oil, diesel, gasoline, coolant, brake fluid and other water based and petroleum based liquids, whether vertically or horizontally mounted and in a fixed or removable tank or reservoir.