This series of incremental encoders has been designedly developed by ELCIS for industrial and professional uses where minimum size is required without affecting technical performances. All these encoders are all-metal construction, turned from rod, with high precision ball bearings (ABEC 5) and stainless steel shaft. In spite of their small size they yield a good protection to environmental conditions (dust, oil, moisture), a proper operation in a wide temperature range and a high frequency response. LED light source (100000 hours MTBF), push-pull connection of detecting phototransistors, components from surface mounting series, accurate design engineering and extended at high and low temperatures assure high reliability. The number of pulses/rev. is from minimum of 1 up to a maximum of 5000 (in according to those available for each model).