Quick Start Guide

3
2.1.2 Rear Panel
VTO2101E-P
Table 2-2 Rear panel description
No.
Name
Description
1
Network port
Connected to the network with network cables.
2
RS-485 ports
See Figure 2-3 and Table 2-3.
3
Cable tray
You can thread cables through the cable tray.
Cable connection
Table 2-3 Port description
DOOR
POWER/485
No.
Name
No.
Name
1
NO
1
+12V
2
NC
2
GND
3
COM
3
RS-485A
4
ALARM IN
4
RS-485B
VTO3211D-P
2.2.1 Front Panel
Number of buttons on the front panel varies on different models. VTO3211D-P2 has two
buttons; VTO3211D-P4 has four buttons. VTO3211D-P4 will be taken as an example.