FS-IR02B Diameter 14MM Water Protection Water Level Sensor

Detects the presence of liquid optically from outside the tank wall, with nothing touching the water at all. That solves the fundamental weakness of resistive probes: there are no exposed electrodes to corrode, foul or contaminate the liquid, so it stays accurate over years rather than weeks. Used for tank level switching, dry-run pump protection and drinking-water systems where probes are unacceptable. Gives a digital output at one fixed level rather than a continuous depth reading. Non-contact optical sensing, nothing touches the liquid; No corrosion or fouling over long service; Suitable for drinking water and food-safe applications; Clean digital output for pump and valve control