Neptune Systems LD-3 Optical Multi-Surface Leak Sensor

Overview

Protect your aquarium and home from costly water damage with the Neptune Systems LD-3 Multi-Surface Optical Leak Sensor. Built as an upgrade to the LD-2, this advanced sensor utilizes optical detection instead of conductive strips, making it more reliable, reusable, and resistant to corrosion—even in demanding saltwater environments. Place it under your stand, near your sump, or around equipment, and rest assured you’ll be alerted to leaks quickly before they cause serious damage.

Key Features

• Optical Sensor Technology – Delivers superior accuracy compared to analog leak detectors.

• Reusable & Durable – Epoxy-coated design resists corrosion and continues working after repeated water exposure.

• No False Alarms – Functions reliably on metal, tile, epoxy-coated cement, and other hard surfaces.

• Saltwater-Safe – Built to last, even when exposed to saltwater environments.

• Weighted Design – Stays flat on surfaces for consistent monitoring.

• Flexible Placement – Ideal for stands, sumps, mixing stations, or any area prone to leaks.

• Apex Integration – Connects to an FMM port for instant communication with Neptune Apex controllers.

Compatibility

• Controller Support: Works with Neptune Systems Apex Controllers via FMM modules or embedded FMM ports (A2/A3 Apex).

• System Use: Suitable for both freshwater and saltwater aquariums.