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Figure 1-6
1.2.4 VTH5222CH/VTH5222CHW-2
Except different numbers of 2-wire port, VTH5222CH and VTH5222CHW-2 are the same in
other aspects. VTH5222CH has 1 group of 2-wire port, while VTH1550CHW-2 has 3 groups of
2-wire port. VTH5222CH is shown in Figure 1-7.
Figure 1-7
1.2.5 VTH1660CH
Its ports are described in Figure 1-8.
Figure 1-8
1.2.6 VTH2221A/VTH2221A-S2
Its ports are described in Figure 1-9.
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