Banner Engineering SM31RLE Photoelectric Sensor

Banner Engineering SM31RLE is a compact Mini-Beam DC voltage photoelectric sensor configured as a through-beam receiver/emitter pair, delivering up to 30 meters of sensing distance and provided with a 2-meter cable to simplify installation in crowded automation lines. Operating from 10 to 30 V DC, the system uses an infrared LED and is sealed to IP67 (NEMA 4X) for durability in dusty or wet environments, with an extended temperature range of -20 °C to +70 °C to cover broad industrial settings. As part of Banner's Mini-Beam DC Voltage series, the SM31RLE supports opposed-mode sensing and is designed to work with Banner amplifiers to yield a reliable digital output from the emitter–receiver path, making it appropriate for high-accuracy object presence detection across long distances. Weighing about 11.63 oz, the unit's compact form factor and its RELEASED status in Banner's product lineup make it a practical choice for retrofit projects or new automation installs where a rugged, long-range through-beam sensor is needed.