grow gm803-s small dc3.3v usb/ttl232 interface 5-30cm reading distance barcode scanner module 1d/2d qr bar code reader pdf417 for arduino, Silver

can read 1d bar code easily and read 2d bar code with high speed. gm803-s lens reading distance is 5-30cm. it also wins high scan speed for linear code, even for bar code on paper or screen. an advanced bar code decoding algorithm which developed on image recognition algorithm, can easily and accurately read bar code, simplify secondary development..syi