The Allen-Bradley 42RC1 Photoswitch Sensor, Model 4000, is a photoelectric sensing device from Allen‑Bradley that belongs to the Model 4000 family. It is identified by part number 42RC1 and uses optical detection to sense the presence or absence of objects in automation setups. This photoswitch sensor is intended for industrial environments where non-contact sensing is preferred to monitor or control processes via light-based detection.
