Add reliable water-level detection to your Neptune Systems Apex with the MOS Magnetic Optical Sensor.

The MOS connects to a Neptune Systems Fluid Monitoring Module and uses reflected infrared light to detect whether the sensor is wet or dry. When the water level crosses the sensor, the MOS changes state and communicates that information to your Apex system. This allows you to create alerts, automate compatible equipment, build a custom auto top-off system, or monitor high and low water levels.

Its magnetic mounting design makes positioning the sensor quick and convenient without requiring a permanent installation. For custom applications, the sensor can also be mounted in a bracket or installed through a hole in a suitable vessel using the included fastening nut and silicone washer.

The improved housing and mounting design help protect the internal sensor from water intrusion while providing a clean, compact installation for sumps, reservoirs, aquariums, and other water-storage containers.

KEY FEATURES

• Detects changes between wet and dry conditions
• Uses reflected infrared light for optical water-level sensing
• Connects directly to a Neptune Systems FMM
• Communicates water-level changes to your Apex system
• Magnetic mounting system allows flexible positioning
• Improved compact and water-resistant design
• Approximately 5-meter sensor cable
• Can be installed with a custom bracket
• Can be mounted through a suitable vessel wall
• Includes a fastening nut and silicone washer
• Suitable for freshwater, saltwater, reef, and RO/DI systems

COMMON USES

• Constructing a custom auto top-off system
• Monitoring high water levels in an aquarium or sump
• Monitoring low water levels in a return-pump chamber
• Detecting reservoir water levels
• Creating Apex alerts when water reaches or leaves the sensor
• Controlling compatible pumps, solenoids, and other equipment through Apex programming
• Adding an emergency backup sensor to an existing top-off system
• Monitoring saltwater-mixing and RO/DI storage containers

HOW IT WORKS

The MOS plugs into an available port on the Neptune Systems Fluid Monitoring Module. Using reflected infrared light, the sensor detects whether water is present at its installed position.

When the sensor changes from wet to dry or from dry to wet, it communicates that change to the Apex system. The detected state can then be used in Apex programming to trigger alerts or control compatible equipment.

COMPATIBILITY

Requires a Neptune Systems Fluid Monitoring Module and a compatible Apex system.

The FMM, Apex controller, pumps, solenoids, and other control equipment are sold separately.

This sensor is not a standalone auto top-off system and does not directly pump or add water. Additional equipment and Apex programming are required when using the MOS to create an automated top-off system.

MOUNTING OPTIONS

The magnetic mounting design allows the sensor to be positioned against a suitable aquarium, sump, or reservoir wall.

For custom installations, the sensor may also be mounted in a compatible bracket or installed through a properly sized hole using the included fastening nut and silicone washer.

CABLE LENGTH

Approximately 5 meters.

WHAT’S INCLUDED

• Neptune Systems MOS Magnetic Optical Sensor
• Magnetic mounting assembly
• Fastening nut
• Silicone washer

IMPORTANT INFORMATION

Install the sensor at the exact water level you want the Apex system to monitor. Carefully test all programming before allowing the sensor to control pumps, solenoids, or other automated equipment.

When building an auto top-off system, redundant sensors, maximum run-time limits, and additional safeguards are strongly recommended to help prevent overfilling.

WHY BUY FROM US?

Infinity and Beyond Aquatics supplies trusted aquarium equipment for freshwater, saltwater, and reef systems. Every order is carefully processed, securely packaged, and supported by knowledgeable aquarium service.

SHIPPING INFORMATION

This item ships through our standard equipment shipping service. Orders are carefully processed and securely packaged to help protect the sensor during transit.