The ALLEN BRADLEY 42EF-P2RCB-G4 is a cylindrical RIGHTSIGHT photoelectric sensor with 18 mm diameter, featuring front through-hole mounting and polarized retroreflective technology. It emits visible red light with a 3000 mm detection range and non-adjustable sensitivity. The sensor operates on AC/DC power with Power MOSFET 2 technology, utilizing a 4-pin AC Micro QD connector. Note: Original factory warranty does not apply, but includes Beyondtech's warranty.