Lanbao PR30S-TM20 AC 2-Wire M30 Through-Beam Sensor Lanbao PR30S-TM20-AC 2 Wires is a compact M30 plastic cylindrical through-beam photoelectric sensor set for AC industrial automation systems. It uses separate emitter and receiver units to detect opaque objects that interrupt the optical path, making it suitable for 20m beam-interruption detection without requiring a reflector. This PR30S AC version is specified for 20m non-adjustable sensing distance, 20-250V AC supply, normally-open or normally-closed receiver logic depending on part number, and AC 2-wire wiring. Available variants include fixed 2m PVC cable models and E2 M12 4-pin connector models, with infrared through-beam operation, IP67 protection, and a PBT housing reference in the official specification table. For related Lanbao photoelectric sensors, compare the Lanbao PR30S-TM20 DC Through-Beam Series, Lanbao PR30-TM20 AC 2-Wire Series, and Lanbao PR18S-TM10 AC 2-Wire Series. For a compact DC 20m option, see the Lanbao PR18S-TM20 DC Series. Technical Specifications Brand Lanbao Series PR30S-TM20-AC 2 Wires Sensor Type Compact M30 plastic cylindrical AC through-beam photoelectric sensor Product Series Reference Cylindrical AC 2-wire through-beam series Detection Type Through beam Rated Sensing Distance 20m non-adjustable reference Standard Target Opaque object greater than 15mm diameter reference Light Source Infrared through-beam reference Dimensions M30 x 72mm and M30 x 90mm references, depending on variant structure Output Logic Normally open or normally closed, depending on selected receiver part number Power Supply 20-250V AC Wiring Type AC 2-wire receiver wiring reference Target Type Opaque object interrupting emitter-to-receiver beam path Repeat Accuracy