Datalogic Matrix 300N - User Interface - Serial Host; How To Build A Simple Interface Test Cable

Product Reference Guide 209
Chapter 9
Maintenance
Cleaning
Clean the lens cover periodically for continued correct operation of the reader.
See
General View.
Dust, dirt, etc. on the lens cover may alter the reading performance.
Repeat the operation frequently in particularly dirty environments.
Use soft material and alcohol to clean the lens cover and avoid any abrasive
substances.