Neptune MOS Magnetic Optical Sensor

Neptune MOS Magnetic Optical Sensor

Neptune MOS Magnetic Optical Sensor is a compact water level sensor for aquarists who want precise level monitoring, whether that's a DIY auto-top-off (ATO) system, a high-level warning in the sump or level sensing in a water storage reservoir. It uses reflected infrared light and a built-in magnetic mount, so it fits neatly into tight spaces.

Key Benefits

• Modern, compact magnetic water level monitoring with an improved look, feel and design
• Precise water level control
• Built-in magnetic mount with a silicone-encased external magnet
• Completely waterproof
• Compact form factor that slots into tight spaces
• Strong magnetic mount suited to glass or acrylic up to 12.7 mm (1/2") thick
• Updated design that helps prevent water from getting into the sensor

How to Use

• Plug the sensor into an Apex FMM port.
• Mount it on the reservoir or sump with the built-in magnetic mount.
• The sensor uses reflected infrared light to signal your Apex when it changes state, from wet to dry or from dry to wet.
• It can be mounted on any type of reservoir with walls up to 6.35 mm (1/4") thick.

Suitable For

• Constructing your own auto-top-off (ATO) system
• High-level warning in a sump
• Water storage level sensing
• Many other water level monitoring jobs
• Owners of the previous OS-1-M, which the MOS replaces with a design that fits into tighter spaces

Compatibility

• Plugs into an Apex FMM port
• Mounts magnetically on glass or acrylic up to 12.7 mm (1/2") thick
• Mounts on any type of reservoir with walls up to 6.35 mm (1/4") thick

Specifications

• Sensing method: reflected infrared light
• Signal: changes state from wet to dry or dry to wet
• Mounting: built-in magnetic mount with a silicone-encased external magnet
• Mount suitability: glass or acrylic up to 12.7 mm (1/2") thick
• Reservoir wall thickness: up to 6.35 mm (1/4")
• Waterproofing: completely waterproof

What's Included

• 1 x Neptune MOS Magnetic Optical Sensor

Frequently Asked Questions

What does the MOS replace?
It replaces the previous OS-1-M. The updated design fits into tighter spaces and helps prevent water getting into the sensor.

What does the sensor connect to?
It plugs into an Apex FMM port.

How does it detect the water level?
It uses reflected infrared light and signals your Apex when it changes state, from wet to dry or from dry to wet.

Can I use it to build an auto-top-off system?
Yes. It can be used to construct your own ATO. It also works as a high-level warning sensor in a sump or as a water storage level sensor.

What thickness of glass or acrylic will the magnetic mount hold on to?
The strong magnetic mount suits glass or acrylic up to 12.7 mm (1/2") thick. The sensor can be mounted on any type of reservoir with walls up to 6.35 mm (1/4") thick.

Is it waterproof?
Yes, it is completely waterproof, and the external magnet is encased in silicone.