Honeywell 5110 - Page 96

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UPC-E1
Most U.P.C. bar codes lead with the 0 number system. For these codes, use
UPC-E0 (page 7-25). If you need to read codes that lead with the 1 number
system, use the UPC-E1 selection.
Default = Off.
EAN/JAN-13
<Default All EAN/JAN Settings>
UPC-E1 On
* UPC-E1 Off