Description

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