The 42EF-P2MNB-A2 is a cylindrical photoelectric sensor with 18 mm diameter, featuring front through-hole mounting and polarized retroreflective technology. It emits visible red light with a sensing range of 3,000 mm and non-adjustable sensitivity. The sensor utilizes NPN output with DC complementary LO/DO configuration, equipped with a 2 m (6.5 ft) cable. Note: Original factory warranty is not applicable, but includes Beyondtech's warranty.