Descriptions of products:, , The bs-1520 is a bidirectional laser barcode scanner with streamline and compact appearance design. And this barcode scanner is a high performance input device, and workable under the multiple modes of manual, auto-trigger and stand detection, it can deliver the fast and accurate scanning, and speed up the processing to reduce the waiting time at check counter, and is very suitable as peripheral input device for use in the point of sale system. Here are specifications for this model as below:, , basic specifications:, , (1) Scanner type Bi-directional scanning, (2) light source 650 nm visible laser diode, (3) scan rate 500 scans per second, (4) reading distance 3 to 15 cm (depends on bar width of barcode), (5) decode capability upc-a, code 93, code128, ucc/ean-128, , ean-8, ean-13, codabar, isbn, industrial 2 of 5, , code 39, standard 2 of 5, matrix 2 of 5 and so on., , (6) interface ps/2 keyboard wedge or usb, (7) trigger mode manual, auto-trigger and stand detection, (8) min. Resolution 0.076 mm or 3 mil, (9) print contrast ratio min. 30%, (10) drop specification 5 ft./1.5 m drops to concrete, , , product safety standard:, - en55032 class b, fcc part 15 class b and rohs etc., , physical characteristics:, , (1) dimensions (w x d x h) 2.6 x 5.9 x 2.1 in, or 67 x 150 x 54 mm, (2) weight 0.29 lb/ 130 gm, (3) power supply +5 vdc/100 ma (max.), (4) color Cloud white/twilight black