The D41D-2CD-025N2 is an RFID-coded non-contact safety interlock switch from the Allen-Bradley Guardmaster D41D series, designed for guarding access points on machinery where a physical hinge or tongue interlock won't hold up. It uses RFID technology to detect the actuator, so there's no mechanical wear at the mating point — that's the whole point of going non-contact. The switch outputs two OSSD (Output Signal Switching Device) channels, which is what a safety-rated PLC or safety relay expects to see for a Category 3 / PL d or SIL CL 2 circuit.
IP67 enclosure rating means the switch body is sealed against dust ingress and temporary immersion — it'll survive washdown on a packaging line or the spray from a parts washer. Individual coding re-teaching enabled means you can pair a specific actuator to this switch on-site, and if an actuator gets damaged, you can re-teach a replacement without swapping the whole switch — that saves a line-down spare call. The M12 connector (typically 5-pin for OSSD switches) keeps field wiring clean and quick; no hard-wiring into a terminal block inside the guard frame.