Keyence PZ-51 Photoelectric Sensor Through-Beam, a square transmissive cable-type unit with an NPN output, is built for reliable beam-interruption detection in automation systems. In a through-beam configuration, an emitter and receiver detect objects by interrupting the light beam across a defined gap. This arrangement is well-suited for conveyors, packaging lines, and other manufacturing processes that require fast, non-contact sensing.
