Wasp Barcode WDI4600 2D Quick Reference Guide - Manual (Page 36)

Cleaning
32 WDI4600
Cleaning
Exterior surfaces and scan windows exposed to spills, smudges
or debris require periodic cleaning to ensure best performance
during scanning.
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
Do not use abrasive or aggressive cleansing agents or
abrasive pads to clean scan windows or plastics.
Do not spray or pour liquids directly onto the unit.