A level sensor is a device used to detect the level of substances, typically liquids or solids, within a container or environment. These sensors can provide continuous or point-level measurement, helping to monitor and control processes in various industries, such as manufacturing, water treatment, and food processing. There are several types of level sensors, including ultrasonic, capacitive, and float sensors. Each type operates on different principles, allowing them to be suitable for specific applications. By providing accurate level readings, these sensors help prevent overflows, ensure proper inventory management, and maintain safety in operations.