<p>The Banner Engineering VALU-BEAM retroreflective photoelectric sensors are rugged, self-contained sensors for demanding industrial applications. Powerful, modulated LED light sources give VALU-BEAM photoelectric sensors greater sensing range than competitive units and a high degree of immunity to ambient light.</p><p> All models are totally epoxy-encapsulated and housed in molded VALOX housings for the ultimate in shock, vibration, moisture, and corrosion resistance. All VALU-BEAM sensors conform to NEMA standards 1, 2, 3, 3S, 4, 4X, 12, and 13, and have an easily-visible top-mounted red LED indicator to reduces the potential for false signals from highly reflective objects ("proxing") and simplifies alignment.</p><p>SM2A912 Series VALU-BEAM retroreflective photoelectric sensors have solid state outputs and are available in either 10-30V DC-powered or 24-250V AC-powered models. They have a range of 6 inches to 30 feet. </p>