Controllers - Liquid, LevelLiquid level controllers are electronic devices that are used to measure and control the level of a liquid in a container or tank. These controllers typically use sensors, such as float sensors or ultrasonic sensors, to measure the level of the liquid, and use this information to control a valve or pump to add or remove liquid from the container. Liquid level controllers are commonly used in a wide range of applications, including water treatment, industrial process control, and automotive systems. These controllers are typically small and compact, and can be easily integrated into a wide range of liquid level management systems.