The Autonics PRD30-25DN is a standard cylindrical inductive proximity sensor for reliable non-contact detection of metal objects in industrial automation. Its 30 mm diameter metal housing and 25 mm sensing distance ensure stable detection of ferrous targets and easy mounting on machines. It uses a NPN output with normally open switching, providing reliable low-side switching for controller inputs. Built-in protection against reverse polarity and short circuits extends service life, and the sealed, rugged body resists dust, oil and vibration. With stable repeatability and fast response, the PRD30-25DN supports precise positioning, presence detection and counting in packaging, conveying and metalworking equipment.