Liquid Level Switch A liquid level switch is a device used to detect and monitor the level of liquids within a container, tank, or reservoir. It has various applications across different industries. Here are some common uses: Industrial Process Control Liquid level switches are used to monitor and maintain the levels of chemicals, water, or other fluids in storage tanks, reactors, and other vessels. They help automate filling, mixing, and emptying processes. Water Treatment and Management In water treatment plants, these switches ensure the proper level of water in reservoirs and tanks. They can control pumps to prevent overflow or dry running, ensuring smooth operations.