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MOS Magnetic Optical Sensor
The Neptune Systems MOS (Magnetic Optical Sensor) is a compact waterproof optical water-level sensor that plugs into an Apex FMM port and uses reflected infrared light to signal wet/dry state changes. It is used for building auto-top-off systems, high-level sump warnings, and reservoir level monitoring, and mounts magnetically on glass or acrylic up to 1/2" thick.
Price: $64.99 USD
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