Allen-Bradley 42GDU-9004-QD8 Photoswitch is a Series 9000 GP Photoelectric Sensor designed for industrial automation, powered from 90–264 VAC and delivering a normally open output. Rockwell Automation lists this model as discontinued, with a retirement date of August 29, 2016 and no planned replacement. Distributor data notes a weight of approximately 0.25 lb, reflecting the compact footprint typical of the 9000 Photoswitch line. As part of the PhotoSwitch family, this model represents an earlier generation of Allen-Bradley photoelectric sensors used in a variety of automation applications.
