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Neptune Systems · Other

OS-1 Optical Level Sensor V2

An optical liquid level sensor from Neptune Systems that plugs into the FMM module of an Apex aquarium controller. Using reflected infrared light, it detects wet/dry state changes to monitor sump, reservoir, or storage container levels, enabling custom auto top-off builds, high-level warnings, and low-water alarms. Includes a fastening nut and silicone washer with a 10-foot cable.

Price: $42.99 USD

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