The ALLEN BRADLEY 42EF-P2KBB-A2 is a cylindrical photoelectric sensor with 18 mm diameter, featuring front through-hole mounting. This polarized retroreflective sensor operates with visible red light at 3000 mm range, offering non-adjustable sensitivity. It supports both NPN and PNP outputs with SCP configuration, functioning in DC dark operate mode. The device comes with a 4-pin micro QD connector on pigtail wiring. Note: Original factory warranty is not applicable, but includes Beyondtech's warranty coverage.