The SICK AG PN4221 is a through-beam photoelectric sensor in the EFECTOR PN4221 family. Designed for non-contact detection along a defined path, it is commonly used in automated production lines and conveyors to verify the presence or absence of parts. In a through-beam configuration, an emitter and receiver are aligned so that object interruption of the beam produces a change in the receiver’s output. This model carries the EFECTOR PN4221 designation, identifying its place within SICK’s industrial sensing portfolio.
