Dahua NVR21-S2 SERIES

123
Figure 3-4
3.6.5 NVR22-S2/22-P-S2/22-8P-S2/2A16/22-4KS2/22-P-4KS2/22-8P-4KS2 Series
Please refer to Figure 3-5 for connection sample.
The following figure for reference only.