barcode slotThe MS146 bar code slot reader is a flexible, cost effective scanning solution. With a resolution of up to 6 mils, the MS146 is capable of reading any bar coded identification ... The terminator isUnitech DuraReader Barcode Slot Reader red - RS232. DRG3227-533C DuraReader - Magnetic Stripe Reader RS232 Find all Accessories. Manufacturer: Unitech MPN: DRG3227-533C.