How To Use:Reading Skills:1. In order to obtain a good reading effect, the aiming beam projected by the viewfinder should be aimed at the center of the barcode, but it can be aimed in any direction for reading.2. Aim the scanning gun at the barcode and press the trigger so that the aiming beam is in the middle of the bar code.3. The closer the scanning gun is to the barcode, the smaller the aiming beam; the farther the scanning gun is from the barcode, the larger the aiming beam. If the barcode is small, the scanner should be close to the barcode; if the barcode is large, the scanner should be farther away from the barcode, so that it is easier to read the barcode correctly.4. If the barcode is highly reflective (for example, coated), you may need to tilt the scanning gun at a certain angle to successfully scan the barcode. 1 x Desktop Barcode Scanner1 x USB Cable1 x User Manual 1.Please make sure the operating voltage is enough and not over the technical specification.2.Please do not scan the laser with eyes.3.Please protect the scanner once touching the corrosive, chemical, dangerous, toxic or high voltage material.4.Please read the configuration guide before using.