MOS Magnetic Optical Sensor

Neptune Systems MOS – Magnetic Optical Sensor The MOS delivers precise water-level detection through infrared optical technology, engineered for reliability in confined spaces. Its compact, fully waterproof design features a robust magnetic mount that grips glass or acrylic surfaces up to 12 mm thick, making it ideal for sumps, ATO reservoirs, and dosing containers. The sensor integrates seamlessly with any Apex FMM port, enabling automated responses to water-level changes—from triggering top-off systems to activating high/low alerts and leak prevention routines. Built with a silicone-encased external magnet to resist corrosion and slipping, the MOS combines durability with space-efficient performance. Requires Neptune Apex Controller and FMM module to operate.