
 6 
INTRODUCTION 
Every MS9590 and MS9591 has a serial number label located on the underside 
of the scanner head and molded text on the scanner handle.  The label and 
molded text provide important information such as the unit’s date of manufacture, 
serial number, CE and caution information.  See Figure 4 for examples of these 
items and their location on the scanner. 
Figure 4 . Molded Text and Serial Number Label 
Caution:  
To maintain compliance with applicable standards, all circuits connected to the scanner 
must meet the requirements for SELV (Safety Extra Low Voltage) according to EN/IEC 
60950-1.  
To maintain compliance with standard CSA-C22.2 No. 60950-1/UL 60950-1 and norm 
EN/IEC 60950-1, the power source should meet applicable performance requirements for 
a limited power source.