The Allen-Bradley 871C-P10A30 Photoelectric Sensor is part of Rockwell Automation's 871C family of tubular photoelectric sensors designed for non-contact presence detection in industrial automation. It operates on 18–30 V DC power, and some 871C variants offer a 0–10 V analog output. These tubular sensors are described by Rockwell as general-purpose devices that detect the presence of ferrous and non-ferrous objects without touching.
