Description:
OPB857Z is a non-contact optical switch with a NPN silicon phototransistor and infrared Light Emitting Diode (LED) which are mounted on opposite sides of a 0.150” ( 3.8 mm) wide slot.
The device upper body is a single molded piece IR transparent plastic that is tinted to reduce ambient light interference and offers water resistance as well as dirt/dust protection. The phototransistor has a internal aperture that offers good optical resolution. LED emissions are near-infrared (850 – 940nm).

FEATUREs:
• Three wires for economy in electrical connection
• Water resistant, no optical openings in upper plastic body
• Internal narrow aperture for high motion resolution

APPLICATIONs:
• Non-contact object sensing Assembly line automation Machine automation Equipment security Machine safety