The Neptune LLS is an industry first! While most liquid level sensors simply detect the presence or absence of liquid at a predetermined sensor height, the LLS is a continuous vertical sensor that can identify the exact depth of a liquid in both inches and centimeters at any given time. With this increased measurement sensitivity, you can detect changes in evaporation, usage, and dosing levels in sump pits, ATO reservoirs, AIO tanks, dosing containers, mixing stations, and much more. The Apex can then be set to send alerts or take action when the liquid level changes by a specified amount. All measurements are displayed in both digital and animated visual readouts in the app, allowing you to monitor your liquid level over time. The possibilities and potential applications of this new sensor technology are endless for automating and optimizing your aquarium system.