Open the fourth page of the teaching manual, and you will see a PowerMode title, which is a description of the scanning mode. In this chapter there are two barcodes. You can successfully set the continuous open mode by scanning the continuous open bar code on the left. There is a ReducedPowerMode barcode on the right. By the way, we can explain that this bar code is in power-saving mode, which means that after setting this function, barcode scanner will be in power-saving scanning mode for a long time, which can protect the battery and prolong its life.