| Model | | DS-7608NI-E2 | DS-7616NI-E2 | DS-7632NI-E2 |
| Video/Audio input | IP video input | 8-ch | 16-ch | 32-ch |
| Two-way audio | 1-ch, RCA (2.0 Vp-p, 1kΩ) | 1-ch, RCA (2.0 Vp-p, 1kΩ) | 1-ch, RCA (2.0 Vp-p, 1kΩ) |
| Network | Incoming bandwidth | 80 Mbps | 160 Mbps | 160 Mbps |
| Network | Outgoing bandwidth | 80 Mbps | 80 Mbps | 80 Mbps |
| Remote connection | 32 | 128 | |
| Video/ Audio output | Recording resolution | 6MP/5MP/4MP/3MP/1080p/UXGA/720p/VGA/4CIF/DCIF/2 CIF/CIF/QCIF | | |
| HDMI/VGA output | 1-ch, resolution: 1920 × 1080/60Hz, 1600 × 1200/60Hz, 1280 × 1024/60Hz, 1280 × 720/60Hz, 1024 × 768/60Hz | | |
| HDMI/VGA output | | | |
| HDMI/VGA output | | | |
| Audio output | 1-ch, RCA (Linear, 1kΩ) | 1-ch, RCA (Linear, 1kΩ) | 1-ch, RCA (Linear, 1kΩ) |
| Decoding | Live view/Playback | 6MP/5MP/3MP/1080p/UXGA/720p/VGA/4CIF/DCIF/2CIF/CI F/QCIF | | |
| resolution | | | |
| Live view/Playback | | | |
| Capability | 8-ch@720p, 5-ch@1080p | 16-ch@4CIF,6-ch@1080p | 12-ch@720p, |
| | | | |
| Hard disk | SATA | 2 SATA interfaces for 2 HDDs | 2 SATA interfaces for 2 HDDs | 2 SATA interfaces for 2 HDDs |
| Capacity | Up to 4TB for each disk | Up to 4TB for each disk | Up to 4TB for each disk |
| Network management | Network protocols | TCP/IP, DHCP, Hik-Connect, DNS, DDNS, NTP, SADP, SMTP, NFS, iSCSI, UPnP™, HTTPS | | |
| External interface | Network interface | 1 RJ-45 10/100/1000 Mbps self-adaptive Ethernet interface | 1 RJ-45 10/100/1000 Mbps self-adaptive Ethernet interface | 1 RJ-45 10/100/1000 Mbps self-adaptive Ethernet interface |
| USB interface | 1 × USB 2.0 and 1 × USB 3.0 | 1 × USB 2.0 and 1 × USB 3.0 | 1 × USB 2.0 and 1 × USB 3.0 |
| Alarm in/out | 4/1 | 4/1 | 4/1 |
| General | Power supply | 12 VDC | 12 VDC | 12 VDC |
| General | Consumption (without hard disk) | ≤ 10 W | ≤ 10 W | ≤ 10 W |
| General | Working temperature | -10 ºC to +55 ºC (+14 ºF to +131 ºF) | -10 ºC to +55 ºC (+14 ºF to +131 ºF) | -10 ºC to +55 ºC (+14 ºF to +131 ºF) |
| General | Working humidity | 10 % to 90 % | 10 % to 90 % | 10 % to 90 % |
| General | Chassis | 385 mm chassis | 385 mm chassis | 385 mm chassis |
| General | Dimensions (W × D × H) | 385 × 315× 52 mm (15.2" × 12.4" × 2.0") | | |
| General | Weight (without hard disk) | ≤ 1 kg (2.2 lb) | | |
