Each scanner has a label located on the underside of the head. This label
provides the unit’s model number, date of manufacture, serial number, CE, and
caution information. The following figure gives an example of the label and its
Figure 4. Label Samples and Location
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
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.
Smudges and dirt can interfere with the proper scanning of a bar code.
The output window should be routinely cleaned with glass cleaner sprayed onto a
lint free, non-abrasive cloth.