Guangzhou State Association, auto scanner, scanner provided by the Guangzhou State Association. We are Guangzhou City State Association Information Technology Co., Ltd. (www.gzdb899.com) located: Guangzhou specializes in: cash register, scanner, bar code machines, management software, small ticket machines, cash registers, shredders everyone in use barcode scanner when it is not often that scans are not sensitive enough? Scanning speed is not fast enough? There from their own point of view this problem? Perhaps because of the difference in your scanning angle and distance affect the final results of your scan. Today I come to you to talk about how to distinguish between the scanning distance barcode scanners, because different types of barcode scanners are not the same depth of field, it automatically scans the scanning distance is not the same gun, so the depth of barcode scanners must be clearly defined. When we use the scanner bar code scanner is contact the label surface, or to maintain a certain distance outside it? In general, retail, office, and factory applications using contactless or proximity scan, warehouse, distribution and transportation applications, the typical use of remote scanning. The following types of barcode scanner depth of field are very different from each scanner, we can also see the name of the contact-type light pen requires contact with the label surface; red barcode scanner working distance limit 0-30cm, But the latest production of red barcode scanner has been effectively extended to the depth of 60cm; depth of field of laser bar code scanner 818 laser scanner longest in 20-100cm between a wireless one-dimensional scanner, some specifically designed to scan large barcode The special laser gun, depth of field can be achieved by differences in the price of a few feet depth barcode scanner can be reflected. Datalogic Gryphon I GD4130 handheld scanner performance and reasonable price scanner can work in a variety of harsh environments, is the first choice to buy a scanner. Datalogic Gryphon I GD4130 is a good value for money and a compact, lightweight and efficient scanner, a bi-directional scanning functionality to read in a variety of environments can accurately read bar code quality rough, reducing the need for back and forth movement of the scanner, The scan rate of 325 times per second, one-dimensional code decoding capabilities / linear codes, for all standard 1D codes including GS1 DataBar linear codes can automatically distinguish and decode.