A water level indicator is an electronic system designed to monitor and display the precise amount of liquid contained within a storage tank. Using specialized sensors or probes, the device detects the water’s height and transmits this data to a visual interface or an audible alarm. These systems are essential for preventing pump damage from dry running and avoiding the structural mess caused by water overflowing. Many advanced versions can be integrated with automated controllers to switch pumps on or off automatically, ensuring a consistent supply without manual intervention.