The BALLUFF BES M18MI-PSC50B-BV05 (BES0084) is an M18 cylindrical photoelectric sensor with dimensions of Ø18×55mm, featuring a brass housing with M18×1 thread for flush mounting. It offers a 5mm sensing range, PNP normally open (NO) switching output, and operates at 2000Hz switching frequency. The housing is nickel-free coated with a specialized sensing surface material.