NEPTUNE SYSTEMS APEX FMM OPTICAL LEVEL SENSOR V2 (OS-1) Salifert Plug in the probes and

Plug in the probes and your equipment

We think the COR-20 is the quietest pump on the market for its size and output

Tidal Swell Mode

ENERGY EFFICIENT

NEPTUNE SYSTEMS APEX FMM OPTICAL LEVEL SENSOR V2 (OS-1) Salifert Plug in the probes andOptical Level Sensor (OS 1) 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. The sensors can be mounted into custom brackets or through a hole in a vessel. Included are a fastening nut and