Dahua Technology VTH2421F Series - VTH8621 K Series; Alarm Port

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1.2.8 VTH8621K Series
Figure 1-19 Rear panel
Table 1-10 Rear panel description
No. Port
1 Alarm port
2 RS-485 and power output port
3 Power input port
4 Network port
1.3 Alarm Port
Figure 1-20 Alarm Port