- RD4500-20-W Stationary Aztec Barcode Scanner Module RD4500-20-W is optimized to have a larger scanning window, which can read barcodes on the screen, even barcodes that contain a large amount of data. It can read barcodes such as PDF417, Data Matrix, QR Code, Micro QR Code, Aztec, etc. Can be easily integrated into information kiosks or […]