EN-204 User and Installation Guide
4
3.2
EN-204 Rear Panel
Following is a description of the connections on the rear panel of the unit.
Figure 2: EN-204 Rear Panel
Number
Marking
Description
1
ALARM IN
4 x relay alarm inputs.
2
ALARM OUT
2 x relay alarm outputs.
3
RS-232
1 x RS-232 serial interface for troubleshooting.
4
RS-485
1 x RS-485 serial interface to connect to PTZ cameras.
5
RESET
Restores the factory default settings. Hold the
RESET
button for more than 30 seconds while powering the
device.
6
microSD
Port for microSD data storage card.
7
LAN
10/100Mbps Ethernet interface (PoE Class 3).
The right LED indicator lights in green when the network
cable is connected. The left LED indicator blinks in orange
when data is transmitted or received.
8
DC 12V
12VDC power supply.
9
GND
Ground screw terminal.
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