PR-M/F Series miniature metal photoeye stands as the smallest metal photoelectric sensor in its class. By employing a "hybrid structure" that features a resin filled, SUS316L stainless steel body, the PR-M/F Series sensors can withstand approximately five times greater shock than conventional models. The heavy duty body is also highly resistant to oils, acids and alkaline detergents, and maintains both IP67 and IP69K enclosure ratings.