Dahua VTH2221A User Manual

Product Structure 13
Figure 2-13
2.2.5 VTH1660CH
VTH1660CH provides 6-ch alarm input ports, 1-ch RS485 port, 1-ch debugging port, 1-ch
network port and power port, as shown in
Figure 2-14.
Figure 2-14
2.2.6 VTH2221A
VTH2221A provides 8-ch alarm input ports, 1-ch network port and power port, as shown in
Figure 2-15.

Dahua VTH2221A Specifications

General

Brand	Dahua
Model	VTH2221A
Category	Intercom System
Language	English