Configured with standard EAS interlock and an RS-232/WN serial host interface, the Datalogic M231B-20101-02301R is an in-counter horizontal single-plane barcode scanner built for medium to high volume POS checkout lanes. It autodiscriminates all standard 1D codes including GS1 DataBar Linear Codes, and extends that coverage to stacked symbologies — GS1 DataBar Stacked, GS1 DataBar Stacked Omnidirectional, and GS1 DataBar Expanded Stacked — via cable connectivity. Flash memory supports field software upgrades, while an auxiliary RS-232 port accommodates handheld scanner attachment, scanner configuration, or label data output, and enables good-read acknowledgement for Sensormatic EAS systems. The unit weighs 2.43 lb and ships without a USB cable or brick cord in standard US configuration. RoHS environmental compliance and a 3-year limited warranty round out the specification.