User manual

Chapter 2 Hardware Installation Page 22
Figure 10 Detailed View of RS-232 Port
Below are the views of RS-232 cover and RJ-45 port respectively, please note the label covered on
and DO strictly follow the instructions to avoid damaging your equipment!
Figure 11 Warning Label
Do NOT connect PoE powered Ethernet cable to the RS-232 port; otherwise the port
may burnout!
If RS-232 cable is used outdoor, please DO add a surge protector to protect the
equipment circuit!
Strongly recommend to add a lightning arrestor on the RS-232 port to prevent from
lightning attack!
Vent
The vent is designed to exclude vapors and moisture out of the unit as well as repel water, dust, and
dirt by the specially designed membrane, thereby preventing the R2 Extender from electric
malfunctioning.
Warning: