The SME312 series MINI-BEAM® Expert™ a complete family of Sensor, all housed in the popular, robust and compact rectangular housing. Their large push button and easy-to-see indicators provide easy configuration, alignment and monitoring during use. Retroreflective and Polarized Retroreflective Mode models are excellent for sensing relatively small items where, opposed-mode sensing is not possible. They are recommended for relatively clean environments where high excess gain is not required. The series features polarized retroreflective mode, convergent mode models, glass fibre optic, visible beam and plastic fibre optic mode models. The series features Green Stability indicator which flashes when received signal level approaches the switching threshold, also indicates Power ON. Integral 2m (6.5ft) cable or 5-pin Euro-style quick-disconnect (QD) connector, depending on model, 9 meter (30 foot) cable models are also available.