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![](https://files.manualsfile.com/48136844-ktd02/bg13.png)
11
1.2.6 VTH5421E Series
Figure 1-15 Rear panel
Table 1-8 Rear panel description
No. Port
1 RS-485 extended port
2 Power port
3 Network port
4 Alarm port
Figure 1-16 RS-485 extended port
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