Magnetic Optical Sensor
This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto-top-off), as a high-level warning sensor in your sump, water storage level sensor, and much more.
Hardware
MOS Magnetic Optical Sensor – Hardware
Original price was: $39.95.$11.98Current price is: $11.98.






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