Datalogic QuickScan QM21X1 Quick Reference Manual page 47

Cleaning
Exterior surfaces and scan windows exposed to spills,
smudges or debris require periodic cleaning to ensure best
performance during scanning. Contacts on the scanner and
base should also be cleaned as needed to ensure a good con-
nection.
CAUTION
Use a soft, dry cloth to clean the product. If the product is very
soiled, clean it with a soft cloth moistened with a diluted non-
aggressive cleaning solution or diluted ethyl alcohol.
CAUTION
Quick Reference Guide
Always be sure to unplug the reader and
base from the wall plug before touching
the contacts.
Do not use abrasive or aggressive cleansing
agents or abrasive pads to clean scan windows,
contacts or plastics.
Do not spray or pour liquids directly onto the
unit.
Ergonomic Recommendations
37