GM803 serial have GM803-L model.The only difference between GM803-L is the lens.GM803-L lens reading distance is 7-70cm.(The actual data depends on the size and content of the code)Parameter PerformanceSensor: CMOS Mode: 640x480Lighting: It is recommended to use white light as lighting, should be uniform and softIndicator Light:It is recommended to use green/blue light as read successfullyRead Code Type:1D: -13, -8, UPC-A, UPC-EISSN, , CodaBar,Code 128,Code93, ITF-14, ITF-6, Interleaved 2 of 5,Industrial2of5,Matrix2of5, Code 39,Code11, -Plessey,GS1-Databar (RSS)2D: QRCode, DataMatrix, PDF417Withstand 1.2 m drop on concrete floor (50 1.2 m drop on concrete floor repeatedly) ManualYou can download the GM803 Serial manual from this website link:https://.dropbox.//buysgr2aeutuub3/AADsvupiGseFm-6IowMBWGCOa?dl=0Operation video on : https://.be/dsYZHYoca00Material:pcbcolour:BlackPackage Contents:1 x GM803-L 7-70cm lensOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.