Laser beams are harmful to the human eye. One should never look directly at the laser beam or through optical instruments. Mounting brackets and reflective models are also supplied with a reflector. The photoelectric sensors of the SM312 series from Turck Banner are standalone, DC-powered sensors. This Mini-Beam SM312 series consists of compact high-performance sensors with an 18-mm threaded lens. The SM312 series is ideal for detecting registration marks, baggage handling, and conveyor applications for bottles. Expert models with a learning mode configuration via push buttons are available. Plastic housing; M18 front nose mounting or screw fastening. Button or remote programming. Automatic, precise sensitivity adjustments at low contrast. Bipolar output, light-on/dark-on functions. Multifunctional LEDs for easy adjustment and monitoring. Full electrical protection. Available in the following modes: opposing, transparent plastic opposing, polarized, non-polarized reflective, convergent, and diffuse.