V
Preface
Overview
This document elaborates installation, configuration and use of DH-PFM wireless equipment.
Symbol Definition
The following symbols may appear in the document. Please refer to the table below for the
respective definition.
Symbol
Note
It means highly potential danger. It will cause severe injury or
casualties if it fails to avoid.
It means moderate or low potential danger. It may cause slight or
moderate injury if it fails to avoid.
It means potential risk. It may cause device damage, data loss,
weaker performance or other unpredictable consequences if it fails
to avoid.
It means that it can help you to solve a problem or save your time.
It means the additional information, which is the emphasis and
supplement of the main body.
