4
Model
21-S2 Series
21-P-S2 Series
21-8P-S2 Series
Port and
Indicator
RS232 Port
N/A
RS485 Port
N/A
USB Port
2 peripheral USB2.0 ports.
Network
Connection
1 RJ45 10/100Mbps self-adaptive Ethernet port.
PoE
N/A
4
8
Power Port
1
power
socket.
Power
adapter
power
supplying
mode.
DC
12V
power.
1
power
socket.
Power
adapter
power
supplying
mode.
DC
48V
power.
1
power
socket.
Power
adapter
power
supplying
mode.
DC
48V
power.
Power Button
N/A
Power
On-off
Button
N/A
IR
Receiver
Window
N/A
Clock
Built-in clock.
Indicator Light
One power status indicator light.
One network status indicator light.
One HDD status indicator light.
General
Power
Consumption
＜
10W (No HDD)
Working
Temperature
﹣
10
℃～﹢
55
℃
Working
Humidity
10℅
～
90℅
Air pressure
86kPa
～
106kPa
Dimension
205mm×206.75mm×
205mm×206.75mm×
425mm×95mm×260
Summary of Contents for NVR21-S2 SERIES
Page 1: ...Dahua Network Video Recorder User s Manual V 4 3 0...
Page 138: ...124 Figure 3 5 3 6 6 NVR42N Series Please refer to Figure 3 6 for connection sample Figure 3 6...
Page 142: ...128 Figure 3 11 3 6 12 NVR42V 8P Series Please refer to Figure 3 12 for connection sample...
Page 143: ...129 Figure 3 12...
Page 157: ...143 Figure 4 15 Step 2 Click device display edit interface See Figure 4 16...
Page 220: ...206 Figure 4 93 Figure 4 94...
Page 240: ...226 Figure 4 110 Figure 4 111 Figure 4 112...
Page 251: ...237 Figure 4 123 Figure 4 124...
Page 253: ...239 Figure 4 126 Click draw button to draw the zone See Figure 4 127...
Page 257: ...243 Figure 4 130 Click Draw button to draw a zone See Figure 4 131 Figure 4 131...
Page 262: ...248 Figure 4 136 Click draw button to draw the zone See Figure 4 137...
Page 275: ...261 Figure 4 148 Figure 4 149...
Page 276: ...262 Figure 4 150 Figure 4 151...
Page 387: ...373 Figure 5 60 Figure 5 61...
Page 388: ...374 Figure 5 62 Figure 5 63...
Page 412: ...398 Figure 5 96 Figure 5 97...
