Solution: Restore the factory settings and turn it off. Solution: First, you can open the corresponding bar code system, and then check whether the bar code is damaged. Solution: You can restore the factory settings and reset the scanning gun according to the instructions to ensure that the corresponding data cable is set correctly.

With the development of mobile Internet, barcode scanning gun is applied to retail supermarkets, which can help supermarkets effectively manage the sales, import and export of goods and improve efficiency. At present, many users who have just come into contact with bar code scanning gun don't know enough about it. Many people don't know how to use it after buying it, and they can't scan the bar code. Next, we will introduce some common problems such as the LED light of bar code scanning gun is not lit.