TaoTronics TT-BS009 - Manual (Page 57)

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Code 32 Prefix “A” transmission
Enable Code 32 Prefix “A” transmission
Disable Code 32 Prefix “A” transmission*
“*” as data character
Enable
Disable*
Code39 Length
Scan Max. Code Length（2 Digits；00~99；99*）
Scan Min. Code Length（2 Digits；00~99；1*）