- 111 - © 2020 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co., Ltd.MS852B Plus User’s Manual3.3.3 GS1 DataBar ExpandedGS1 DataBar Expanded On*Default All GS1 DataBarExpanded SettingsGS1 DataBar Expanded Off3.3.3.1 GS1 DataBar Expanded Message LengthScan the bar codes below to change the message length. Refer to MessageLength Description for additional information. Minimum and Maximum lengths= 4-74. Minimum Default = 4, Maximum Default = 74.Minimum Message LengthMaximum Message Length3.3.4 PDF 417PDF 417 On*Default All PDF 417 SettingsPDF 417 Off