The Neptune Systems LLS-15 is a 15-inch continuous liquid level sensor designed for use with the Neptune Apex aquarium controller. Unlike standard float switches that only detect if water is "high" or "low," this sensor provides an exact, real-time depth measurement in inches or centimeters.
Key Features and Use Cases Continuous Monitoring: It functions like an "electronic ruler," allowing you to see the precise water level through the Apex Fusion app. Ideal Applications: The 15-inch model is the most popular size and is specifically recommended for: Sump Return Sections: Ensuring the water level remains consistent to prevent pump cavitation or salinity swings. ATO Reservoirs: Tracking exactly how much top-off water is left so you can receive alerts as it gets lower. Dosing Containers: Monitoring the consumption of additives like alkalinity or calcium over time. Mounting: It includes a sliding plastic mounting clip to attach to the side of a tank, sump baffle, or reservoir lip. Precision: Once calibrated, it is accurate to approximately 0.2 inches.
Technical Compatibility Controller Requirements: It connects to any available FMM (Fluid Monitoring Module) port. System Support: It is compatible with Apex A2 (with an FMM) and Apex A3 models. It is not backward compatible with the Apex Classic (A1). Submersibility: While the sensor strip (the white ruler section) is designed to be in water, the "head" (top part) is not intended to be fully submerged.
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