The depth of field of different types of wireless scanner is different, so the scanning distance is different, so the depth of field of Pos scanner must be clearly defined.
Laser wireless Barcode Scanner have the longest depth of field. Between 20cm and 100cm, there are some laser barcode gun that are used to scan large bar codes. The depth of field can reach a few feet. This can be reflected in the price of the scanning gun.
The working distance of the red light wireless barcode scanner is limited to 0-40cm. Now the latest red light scanning gun can extend the depth of field by 60cm.