Datalogic Scanning I GD4100 - Manual (Page 209)

Interleaved 2 of 5 (I 2 of 5)
Product Reference Guide 207
Interleaved 2 of 5 (I 2 of 5) — cont.
I 2 of 5 Check Character Transmission
Enable this option to transmit the check character along with I 2 of 5 barcode data.
ENTER/EXIT PROGRAMMING MODE
I 2 of 5 Check Character Transmission = Don’t Send
I 2 of 5 Check Character Transmission = Send
DEFAULT