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DVRs Feature Table

DVR
Part Number
Channels
Resolution
Microphone Input
Alarm Input
HDD Bays
PTZ
Dimensions
4 Channel
3243
4
D1
1
0
1
No
8 Channel
3244
8
D1
1
8
1
Yes
16 Channel
3245
16
D1
4
16
1
Yes

NVRs Feature Table

NVR
Part Number
Channels
Resolution
Microphone Input
Alarm Input
HDD Bays
PTZ
Dimensions
4 Channel
3331
4
720P
1
No
8 Channel
3332
8
720P
2
1
Yes
16 Channel
3336
16
1080P
1
1
No

CVRs Feature Table

CVR
Part Number
Channels
Resolution
Microphone Input
Alarm Input
HDD Bays
PTZ
Dimensions
4 Channel
3403
4
720P
0
1
No
Smart 1U, 205mm× 205mm
8 Channel
3421
8
720P
1
1
No
16 Channel
3420
16
720P
4
16
1
Yes

Product Comparison

The three charts above illustrate the different features between DVRs, CVRs, and NVRs. They also compare the different channels within those three categories.