Offers choice of 30 mm plastic or stainless-steel threaded barrel, depending on application. Operates in opposed mode with very high excess gain. Available in models with standard 10 to 30V dc with Bi-Modal NPN/PNP outputs or 24 to 240V ac with SPST solid-state output. Uses positive sealing to eliminate even capillary leakage, lens is quad-ring sealed. Exceeds IEC IP67 (NEMA 6P) ratings ideal in equipment washdown environments. Offers three modulation frequencies to minimize optical crosstalk potential between adjacent sensor pairs.