RC-NR21P4-4D 4-Channel 4K AI NVR with 4-Port PoE
RC-NR21P4-4D 4-Channel 4K AI NVR with 4-Port PoE
4K AI Network Video Recorder
RC-NR21P4-4D 4-Channel 4K AI NVR
Four built-in PoE ports and 4K deep-learning recording in a compact, low-power box.
Description
A compact single-box recorder for small camera systems. Connect up to four IP cameras directly to the recorder, capture 8 MP (4K) per channel with H.265+ compression, and view footage in 4K over HDMI with a simultaneous VGA output.
- 4 IP camera inputs with 4 independent PoE ports (IEEE 802.3 af/at, ≤ 50 W)
- Records up to 8 MP (4K) per channel · 40 Mbps incoming bandwidth
- Independent HDMI (up to 4K) and VGA outputs
- Motion Detection 2.0 — human & vehicle target classification
- H.265+ compression saves 50–70% storage versus H.264
- Single 3.5″ SATA bay (up to 8 TB) · free cloud mobile app
Product Overview
The RC-NR21P4-4D is a 4-channel network video recorder with four built-in PoE ports, powering and connecting cameras over a single Ethernet run with no separate switch. It records each channel at up to 8 MP (4K) with 40 Mbps incoming bandwidth, runs deep-learning Motion Detection 2.0 for human and vehicle classification, and supports two-way audio and third-party ONVIF cameras. A single SATA bay holds up to 8 TB, and the compact low-power design suits homes and small offices.
Professional & Reliability
HD Video Output
Storage & Playback
Smart Function
Network & PoE Access
Additional Information
Full technical specification matrix for the RC-NR21P4-4D.
| Video / Audio Input | |
|---|---|
| IP Video Input | 4-ch, up to 8 MP |
| Two-Way Audio Input | 1-ch, RCA (2.0 Vp-p, 1 kΩ) |
| Incoming Bandwidth | 40 Mbps |
| Outgoing Bandwidth | 80 Mbps |
| Video / Audio Output | |
| HDMI Output | 1-ch, 4K (3840 × 2160)/30 Hz, 2K (2560 × 1440)/60 Hz, 1920 × 1080/60 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz |
| VGA Output | 1-ch, 1920 × 1080/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz |
| Audio Output | 1-ch, RCA (Linear, 1 kΩ) |
| Frame Rate | Main stream: 50 fps (P) / 60 fps (N); Sub-stream: 50 fps (P) / 60 fps (N) |
| Decoding & Playback | |
| Decoding Format | H.265+ / H.265 / H.264+ / H.264 |
| Recording Resolution | 8 MP / 6 MP / 5 MP / 4 MP / 3 MP / 1080p / UXGA / 720p / VGA / 4CIF / DCIF / 2CIF / CIF / QCIF |
| Decoding Capability | 2-ch @ 4K or 8-ch @ 1080p |
| Synchronous Playback | 4-ch |
| Playback | Instant playback, smart search, smart playback |
| AI / Smart Features | |
| Motion Detection 2.0 | Human and vehicle target classification |
| VCA Detection | Line crossing, intrusion detection; VCA alarm recording |
| Storage Management | HDD quota allocation per channel |
| Network | |
| Network Interface | 1 × RJ-45 10/100 Mbps self-adaptive Ethernet interface |
| Network Protocols | TCP/IP, DHCP, Cloud P2P, DNS, DDNS, NTP, SMTP, NFS, iSCSI, UPnP™, HTTPS |
| Third-Party Cameras | ONVIF-compatible |
| Remote Access | Free cloud mobile app (P2P), web browser access |
| PoE | |
| PoE Ports | 4 × RJ-45 10/100 Mbps self-adaptive |
| PoE Standard | IEEE 802.3 af/at |
| Max PoE Power | ≤ 50 W |
| Storage | |
| HDD | 1 × SATA interface (1 HDD) |
| Capacity | Up to 8 TB per disk |
| External Interface | |
| USB | 1 × USB 2.0 (front) + 1 × USB 3.0 (rear) |
| General | |
| Power Supply | 48 VDC, 1.35 A |
| Consumption | ≤ 10 W (without HDD, PoE off) |
| Working Temperature | -10 °C to +55 °C (14 °F to 131 °F) |
| Working Humidity | 10% to 90% |
| Chassis | 1U |
| Dimensions (W × D × H) | 320 × 240 × 48 mm (12.4" × 9.4" × 1.9") |
| Weight | ≤ 1.18 kg (2.6 lb) without HDD |
Download
Get the complete RC-NR21P4-4D specification sheet as a printable PDF for quotes, submittals and installation planning.
⇩ Download spec sheet (PDF)View detailed product information →
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