Neptune Systems Liquid Level Sensor with Clip Mount

Overview

Take your aquarium automation to the next level with the Neptune Systems Liquid Level Sensor (LLS) — the first-of-its-kind, industry-exclusive solution for continuous water level monitoring. Unlike traditional float or optical sensors that only detect “on/off” states, the LLS provides real-time measurements of liquid depth in both inches and centimeters. From tracking evaporation and dosing container levels to managing sump or mixing station volumes, the LLS delivers unmatched precision and flexibility.

With seamless integration into your Apex Fusion app, you can set alerts, trigger automated actions, and even view animated graphs that help you visualize changes over time. Whether you’re managing an ATO reservoir, sump, or dosing system, the LLS opens the door to smarter, safer, and more reliable aquarium automation.

Key Features

• Continuous Depth Monitoring – Measures exact liquid levels in real time (cm & in).

• Smarter Than Float Switches – Tracks changes in evaporation, consumption, and dosing more accurately.

• Wide Applications – Use in sumps, ATO reservoirs, AIO tanks, dosing containers, mixing stations, and more.

• Apex Fusion Integration – Monitor, graph, and visualize data with digital and animated readouts.

• Custom Alerts & Automation – Trigger Apex actions or receive notifications when levels rise or fall.

• Easy Mounting – Includes clip for quick and secure installation.

• Four Size Options – Available in 4", 15", 23", and 35" lengths to suit different applications.

Compatibility

• Works with A2 Apex (via FMM module) or A3 Apex (via embedded FMM ports or separate FMM).

• Not compatible with A1 Apex Classic models.

Available Sizes

• LLS-4: 4" (ideal for dosing containers & ATO reservoirs)

• LLS-15: 15" (small sumps or medium containers)

• LLS-23: 23" (standard sumps & reservoirs)

• LLS-35: 35" (large sumps, mixing stations, or storage tanks)