Neptune Optical Sensor with Magnetic Mount

Neptune OS-1M Optical Sensor for FMM with Magnetic Mount Smart, Reliable Water Level Detection for Your Aquarium The Neptune OS-1M Optical Sensor uses reflected infrared light to detect changes from wet to dry or dry to wet. Designed to plug directly into your FMM (Fluid Monitoring Module), it communicates seamlessly with your Apex system to automate or alert based on water levels. Key Features Reflected infrared sensor for precise wet/dry detection Compatible with FMM and Apex systems Ideal for ATO (auto-top-off) systems, sump level monitoring, and water storage tanks Comes with a magnetic mount, fastening nut, and silicone washer Can be installed in custom brackets or vessels Versatile Uses in Aquarium Automation Use the OS-1M Optical Sensor to: Automate top-off systems Trigger high-water alarms in your sump Monitor water levels in RODI or additive reservoirs Enhance overall system safety and control Specifications Feature  Details Sensor Type  Optical (IR Reflective) Mount Type  Magnetic or bracket Cable Length  3 meters Compatibility  Neptune FMM, Apex systems