The S51-PR-5-F00-PK is a tubular M18 through-beam receiver in Datalogic’s S51 photoelectric sensor family, designed to sense the presence or absence of a matching emitter across a beam. It provides a PNP output and operates on a 10-30 V DC supply, with infrared LED illumination that enables reliable detection along the beam path. Typically paired with the corresponding S51 emitter to create a through-beam sensor pair, this receiver supports beam distances up to around 18 meters in common industrial configurations. With a tubular M18 housing and radial-optic design, it fits compact sensor networks where space is at a premium.
