- 25 - © 2017 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co., Ltd.MS650 User’s Manual3.3 MSI Code, UK Plessey CodeFor MIN/MAX Length setting procedure, please refer to Appendix A.MSIENABLEDISABLECDV & SEND CDCDV & NOT SEND CDCHECK DIGIT DOUBLE MOD 10CHECK DIGIT DOUBLE 11 PLUS MOD 10CHECK DIGIT SINGLE MOD 10MIN LENGTH (6)MAX LENGTH (48)UK PLESSEY CODEENABLEDISABLECDV & SEND CDCDV & NOT SEND CD