Guangzhou State Association | one-dimensional 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 Guangzhou association State Information Technology Co., Ltd. was established in 2009, is a professional cash register equipment vendors and system integration service providers. Scanner products are widely used in shopping malls, shopping centers, supermarket chains, chain convenience stores, chain stores, restaurants and catering clothing and footwear industry, for the industry to provide intelligent information solutions; help companies reduce operating costs to achieve fine management of one-dimensional scanner, thereby establishing a market advantage to stand. Since its inception, adhering to the "integrity, enterprising, innovative, win-win" business philosophy, more well-known brand manufacturers at home and abroad to establish long-term cooperative partnership for sustained and stable development of the company provided a source of power. The conclusion of diplomatic relations, create brilliant! Let us join hands together towards a new splendor! We use the bar code scanner when scanning gun sales, 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, then scanning distance is not the same, so the depth of barcode scanners must be clearly defined. When we use the scanner is scanning the bar code scanner gun wholesale label surface contact, 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; laser bar code scanner to scan the longest depth of field guns, in 20-100cm between some specifically designed to scan large barcode special laser gun, depth of field can be reach the depth of several feet through the price difference barcode scanner can be reflected.