Bluehresy BLST-20, Руководство пользователя

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Sets whether to transfer check bits
The ean-13 barcode data is fixed to 13 characters, and the 13th character is the test
bit, which is used to verify the correctness of all 13 characters.
** Transfer check bit No check bits are sent
Set whether or not to read two additional codes
Two extension code refers to the ordinary barcode attach 2 digits barcode, with
two extension code is illustrated below barcode, among them the blue line on the
left box for ordinary barcode, on the right side of the red wire frame for two
extension yards.
** Don't read Allowed to read