Banner Engineering's MINI-BEAM is the one of the world's most popular photoelectric sensors. The Banner Engineering SM312DQD is a compact, high-performance sensor with 18 mm threaded lens or side mount.Infrared or visible red, green, blue or white sensing beam. Compact, modulated, self-contained diffuse proximity mode sensors for 10-30V dc operation. Range to 380 mm (15") (referenced to 90 percent reflectance white test card). Switch-selectable for light operate or dark operate. Includes Banner-exclusive AID alignment system. Highly repeatable 1 millisecond response. Both sourcing and sinking outputs (150 mA max. each); continuous overload and short-circuit protected. Rugged, epoxy-encapsulated construction that meets NEMA standards 1, 2, 3, 3S, 4, 4X, 6, 12 and 13; IEC IP67. Physically and electrically interchangeable with 18 mm barrel-type photoelectrics