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 Technology Co.,Ltd ., established in 2009 ... 500millionResolution4mil(0.1mm)Tipbuzzer and ledScanning modePress button, Automatic continuous scan Auto-inductionWorking times of buttonone million times Working hours of ...