The Banner SM51RB6 LED Scanner is a receiver in Banner’s SM51 Series of opposed‑mode sensors, built in a 1/2‑inch wide die‑cast metal housing with a stainless steel legend for harsh industrial environments. It operates from 10 to 30 V DC with up to 10% supply ripple and draws about 25 mA from the supply; its normally open output is an open‑collector NPN transistor that can sink up to 250 mA and includes reverse polarity protection. When paired with the SM51EB6 emitter, the SM51RB6 forms an opposed‑mode sensor pair for reliable object detection in through‑beam configurations. The unit is rated for a wide operating temperature range of −40 to +70 °C (−40 to +158 °F).
