Function of Barcode Scanner Module MJ2808-AT 1. Interface supported :USB.KBW,RS232. 2. Certification :CE,FCC,RoHS 3. 2 years ... Function of Barcode Scanner Module MJ2808-AT Huizhou Minjie ... products are laser bar code scanners, engines, decoding modules and wireless scanner modules. Meanwhile, we accept OEM and ODM orders, ...