Honeywell Voyager 1200g User Manual page 170

UPC-A Check Digit
This selection allows you to specify whether the check digit should be
transmitted at the end of the scanned data or not. Default = On .
UPC-A Addenda
This selection adds 2 or 5 digits to the end of all scanned UPC-A data.
Default = Off for both 2 Digit and 5 Digit Addenda.
2 Digit Addenda On
5 Digit Addenda On
UPC-A Addenda Required
When Required is scanned, the scanner will only read UPC-A bar codes
that have addenda. You must then turn on a 2 or 5 digit addenda listed on
page 7-36. Default = Not Required.
Required
7 - 36
* On
Off
* 2 Digit Addenda Off
* 5 Digit Addenda Off
* Not Required