Avalue Technology HID-2138 User Manual page 8

HID-2138 User Manual
Explanation of Graphical Symbols
HID-2138 Quick Reference Guide
Warning: dangerous voltage
Caution
Note
ISO 7000-1641: Follow operating instructions or Consult
instructions for use.
Direct current.
Equipotential
Stand-by
US Conformance
Follow the national requirements for disposal of equipment.
Stacking layer limit
This side up
8