Banner Engineering SM312LVAG Polarized Retroreflective Sensor

The Banner Engineering SM312LVAG Mini-Beam polarized retroreflective sensor is a compact, self-contained photoelectric sensor that detects targets using polarized retroreflection over a 50 mm to 2 m range. It operates from 10–30 V DC and provides two discrete outputs (bipolar): one NPN and one PNP, with a 2 m pre-wired cable for straightforward integration, and it uses a 650 nm red LED with an acrylic lens for visible-beam sensing. The rectangular thermoplastic housing (18 mm diameter, M18 mount) is IP67 and NEMA 4X rated for harsh environments. Key specs include 1 ms response time, 100 ms power-up delay, 300 µs repeatability, operating temperature -20 to 70 C, and humidity up to 90% at 50 C, with light/dark operate and indicator LEDs to confirm status. Common applications include part detection on conveyors, presence sensing in packaging lines, and other automation tasks where a compact, polarized retroreflective sensor is advantageous. Sensing mode is polarized retroreflective with a 650 nm visible red beam and LED indicators to verify status.