NVR / Recorders › NVR504-16B-P16 / 32B-P16
Uniview (UNV)NVR504-B-P Series · 16-Port PoE + 4× SATA HDD
4-HDD PoE Network Video Recorder · NVR504-B-P Series
NVR504-16 / 32B-P16
16 / 32-channel network video recorder with 16 built-in PoE ports (802.3at/af, 150 W total) — four SATA bays with RAID 1/5, Ultra 265 compression, independent VGA and HDMI output, records cameras up to 16MP, with 320 Mbps incoming bandwidth and 16 alarm-in / 4 alarm-out terminals.
16MP · max recordingUltra 265 · low storage16× PoE · built-in, 150 W total4× SATA · up to 24 TB eachRAID 1/5 · disk redundancy320 Mbps · incoming bandwidth
Choose your size — two models on this page
Rule of thumb: count your cameras across the whole site, then leave room to grow — 16 channels covers most single buildings; step up to the 32B-P16 if you're combining several buildings or expect to add cameras later. Both models share the same 16 built-in PoE ports — on the 32-channel model, the first 16 cameras can plug straight in, the rest connect over the regular network with their own power source. Highlighted rows in the spec table below show every other difference between the two.
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The Uniview NVR504-B-P Series is a 4-HDD PoE network video recorder offered in two sizes: NVR504-16B-P16 (16-ch) and NVR504-32B-P16 (32-ch). Both build in 16 independent PoE ports (IEEE 802.3at/af, max 30 W per port, 150 W total) to power cameras directly from the recorder, record up to 16MP with Ultra 265 / H.265 / H.264 compression, and support RAID 1/5 disk redundancy across four SATA bays each up to 24 TB. The rear panel adds 16 alarm inputs, 4 alarm outputs and an RS485 port, runs on AC 100-240 V mains power, and the local interface is available in 38 languages including Spanish (Latin America), Portuguese (Brazil) and French.
Is this the right recorder for you?
Plain-language guide for buyers and installers — based only on what this recorder actually does.
Large sites & multi-building campuses16 or 32 channels in one box covers a full warehouse, factory floor, or multi-story retail location without stacking multiple recorders.
Built-in 16-port PoEIEEE 802.3at/af ports (max 30 W per port, 150 W total) power cameras straight from the recorder — no separate PoE switch, no extra power cable run to each camera.
Storage that can't afford to failFour SATA bays with RAID 1/5 mirror or parity-protect the footage — a single disk failure doesn't wipe out your recordings.
Long-term evidence retentionFour SATA bays, up to 24 TB each (up to 96 TB total), keep months of footage online instead of overwriting after a few weeks.
High camera counts on one network link320 Mbps incoming bandwidth over a single Gigabit uplink handles 32 higher-resolution streams without choking the network — the 16 PoE ports carry the local camera traffic separately.
Wired alarm integration16 alarm inputs and 4 alarm outputs on the rear panel wire directly to sirens, door sensors or access-control triggers — no extra alarm hub needed.
Search across many channels fastPaired with Uniview smart cameras, the built-in VCA Search (face snapshot, vehicle, human body, heat map, people counting) jumps straight to the clip instead of scrubbing hours of 16- or 32-channel footage.
Not the right pick if you need…
- More than 16 PoE-powered cameras — this recorder has 16 built-in PoE ports; on the 32-channel model, the extra 16 channels need cameras with their own power (external PoE switch or local supply)
- Recorder-side AI on ordinary or third-party cameras — this series has no "Smart by NVR" processing; face/vehicle detection runs on Uniview smart IPC cameras upstream, the recorder only indexes and searches the results
- RS232 serial control — only RS485 is present on this series, RS232 is listed N/A
- A fifth hard disk or more — this series tops out at 4 SATA bays (up to 96 TB total with four 24 TB drives)
- Redundant/dual power input — it runs on a single AC 100–240 V power supply, no built-in PSU redundancy
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Key Features
Complete list from the official datasheet.
Support Ultra 265/H.265/H.264 video formats
16/32-channel input
Plug & Play with 16 independent PoE network interfaces
Support 1-ch HDMI, 1-ch VGA. HDMI up to 4K (3840x2160) resolution
VGA and HDMI independent output
Up to 16 Megapixels resolution recording
ANR technology to enhance the storage reliability when the network is disconnected
Support cloud upgrade
Built-in PoE. RAID-protected storage.
Two real capabilities that define this series: 16 built-in PoE ports that power your cameras, and RAID-protected 4-bay storage.
BUILT-IN POE
Power 16 cameras straight from the recorder
16 independent RJ45 PoE ports (IEEE 802.3at/af) deliver up to 30 W per port and 150 W total — plug cameras straight into the recorder with a single cable for both power and data. On the 32-channel model, the extra 16 channels connect over the regular network with their own power source.
RAID 1/5 STORAGE
Four bays, and a disk can fail safely
Four independent SATA bays each take a disk up to 24 TB (up to 96 TB total) and support Disk Group plus RAID 1/5 — mirroring or parity protection so a single drive failure doesn't take your recordings with it.
Which size fits your project?
Bars show camera capacity per model. Click the model buttons above to switch — the spec table highlights every other difference.
NVR504-16B-P1616-ch input · live view split up to 16 · sync playback 16-ch
16cameras
NVR504-32B-P1632-ch input · live view split up to 32 · sync playback 16-ch
32cameras
Who uses it, where it goes and how to size it
Written for the NVR504-16B-P16 / 32B-P16 from the official datasheet: 16 or 32 IP channels, 16 built-in PoE ports (30 W per port, 150 W in total), 320 Mbps incoming, 4 SATA bays up to 24 TB each with RAID 1/5, AC 100–240 V mains.
Which size suits which installation
- NVR504-16B-P16: one building, no separate switch — Every one of the 16 cameras plugs straight into the recorder for power and video, as long as each cable run stays within 100 m. A tidy all-in-one cabinet for warehouses, schools and factories.
- NVR504-32B-P16: a main building plus remote areas — 16 nearby cameras run on the built-in PoE ports; the other 16 channels come in over the gigabit network port from an external PoE switch, for example in a second building or at a gate reached by fibre.
- Sites that must keep months of footage — Four bays up to 24 TB each with RAID 5: 72 TB protected keeps 16 cameras at 4 Mbps for about 104 days, and one failed disk does not lose the recordings.
- Hot sites with Uniview smart cameras — Rated to 55 °C, with no recorder-side AI: face, vehicle and people-counting results come from Uniview smart cameras and the recorder makes them searchable.
Where and how to install the recorder
- 1.5U case, rack kit RM-1.5U-400 — The case is 400 × 368 × 74 mm, narrower than a 19-inch rack, so order the RM-1.5U-400 kit for cabinet mounting. Leave free space above and around it: the 150 W PoE power is turned into heat inside this box.
- Mains power and a properly sized UPS — It has an internal AC 100–240 V supply, so no external adapter. Because the cameras are powered from it, size the UPS for the recorder (up to 20 W without disks), the four disks and the PoE load of up to 150 W, so cameras keep recording during an outage.
- Camera cables: 100 m, solid copper — Each PoE port feeds one camera over up to 100 m of Cat5e or Cat6. Use solid-copper cable, not copper-clad aluminium, which drops voltage and can make cameras reboot at night when IR comes on. Terminate outdoor joints in a junction box.
- One gigabit port for the LAN and extra cameras — This model has 1 gigabit RJ45 network port. It connects to the router for remote access and, on the 32B-P16, to the external PoE switch that carries channels 17–32.
- Four disks, array before recording — Fit identical surveillance-grade disks and create RAID 5 or RAID 1 before recording starts, since building an array erases the disks. For 24 TB disks keep the room at no more than 40 °C, even though the recorder itself is rated to 55 °C.
Planning table: channels, bandwidth, disks and retention
Both sizes have the same 16 PoE ports and 150 W budget. The 16B-P16 is a closed system: every camera on its own port. The 32B-P16 records 32 cameras but still powers only 16, so channels 17–32 need an external PoE switch on the network port. The 150 W budget averages about 9.3 W per port with all 16 in use, which is comfortable for ordinary bullets and domes.
| NVR504-16B-P16 · 16-ch | NVR504-32B-P16 · 32-ch | |
|---|---|---|
| IP camera channels | 16 | 32 |
| PoE ports / total PoE budget | 16 / 150 W | 16 / 150 W |
| Max power per PoE port | 30 W (802.3at) | 30 W (802.3at) |
| Average budget per port with all 16 ports used | 9.3 W | 9.3 W |
| Cameras at an assumed 6 W each on the PoE ports | 16 (96 W) | 16 (96 W) |
| Channels that need an external PoE switch | 0 | 16 |
| Incoming bandwidth | 320 Mbps | 320 Mbps |
| Average bitrate per camera with every channel in use | 20 Mbps | 10 Mbps |
| HDD bays × max capacity per disk | 4 × 24 TB | 4 × 24 TB |
| Usable storage: no RAID / RAID 5 / RAID 1 | 96 / 72 / 48 TB | 96 / 72 / 48 TB |
| Retention, every channel at 4 Mbps, 72 TB in RAID 5 | 104 days | 52 days |
| Live view split, largest layout | 16 | 32 |
| Local synchronous playback | 16-ch | 16-ch |
- Pick the NVR504-16B-P16 when all cameras are within 100 m of the recorder: one cable per camera, no switch, and about 104 days at 4 Mbps on 72 TB (RAID 5).
- Pick the NVR504-32B-P16 when 16 cameras are near and up to 16 more are far away or in another building on their own PoE switch.
- If you want the recorder to run face, SIP or UMD analysis on ordinary cameras, the same PoE layout exists as the NVR504-16B-P16-IQ / 32B-P16-IQ.
Assumptions: 6 W per camera (typical fixed IR bullet or dome; check each camera's datasheet), 4 Mbps per camera for storage (typical continuous H.265 for 4 MP). Days = TB × 10^12 ÷ (cameras × bitrate ÷ 8 × 86,400), rounded down; RAID 5 on four equal disks keeps three disks of capacity. PoE figures are from the official datasheet.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the two models:NVR504-16B-P16 · 16-chNVR504-32B-P16 · 32-ch
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 16B-P16 · Ultra 265/H.265: 2×16MP@30, 2×12MP@30, 4×4K@30, 6×5MP@30, 8×4MP@30, 10×3MP@30, 16×1080P@30 | H.264: 2×16MP(4800×2688)@30, 2×12MP@30, 2×4K@30, 4×5MP@30, 6×4MP@30, 8×3MP@30, 14×1080P@30, 16×720P@3032B-P16 · Ultra 265/H.265: 2×16MP@30, 2×12MP@30, 4×4K@30, 6×5MP@30, 8×4MP@30, 10×3MP@30, 16×1080P@30, 32×960P@25 | H.264: 2×16MP(4800×2688)@30, 2×12MP@30, 2×4K@30, 4×5MP@30, 6×4MP@30, 8×3MP@30, 14×1080P@30, 30×720P@30, 32×D1 |
| Decoding Capability Description | The resolution of each channel cannot exceed 8192 pixels in length and 4096 pixels in width. For VGA/HDMI independent output, the VGA live video is output by default; to output the highest resolution video from the HDMI port, clear the VGA video on the preview page. |
| Audio Compression | G.711A, G.711U |
Network
| Incoming Bandwidth | 320 Mbps |
| Outgoing Bandwidth | 160 Mbps |
| Remote Users | 128 |
| Protocols | TCP/IP, P2P, UPnP, NTP, DHCP, PPPoE, HTTP, HTTPS, DNS, DDNS, SNMP, SMTP, RTSP, 802.1x, IPv6, IPv4 |
| Browser (Plugin) | IE10, IE11, Chrome 45+, Edge 79+, Firefox 52+ |
Video/Audio Input
| IP Video Input | 16B-P16 · 16-ch32B-P16 · 32-ch |
| RCA Audio Input | 1-ch |
Video/Audio Output
| HDMI Output | 4K (3840 × 2160)/30 Hz, 1920 × 1080/60 Hz, 1920 × 1080/50 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz |
| VGA Output | 1920 × 1080/60 Hz, 1920 × 1080/50 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz, 1024 × 768/60 Hz |
| RCA Audio Output | 1-ch |
| Liveview Display | 16B-P16 · 1/4/6/8/9/1632B-P16 · 1/4/6/8/9/16/25/32 |
| Corridor Mode Screen | 16B-P16 · 3/4/5/7/9/10/12/1632B-P16 · 3/4/5/7/9/10/12/16/32 |
| Two-way Audio | 1-ch, RCA (Using the audio input and output) |
| Snapshot | FTP/Schedule/Event Snapshot; 4-ch snapshot (max. D1 (720 × 576) video resolution, with D1 snapshot resolution) |
Recording
| Recording Resolution | 16 MP/12 MP/8 MP/6 MP/5 MP/4 MP/3 MP/1080P/960P/720P/D1/2CIF/CIF |
| Synchronous Playback in Local | 16-ch |
Smart Function
| Smart by IPC | All channels (up to 8 images/s in total) Face Detection, Face Comparison, Vehicle Detection (LPR), Temperature Detection, SIP, UMD, Video Metadata, Traffic Monitoring |
| VCA Search | Face Snapshot Search, Face Comparison Search, Motor Vehicle Search, Non-Motor Vehicle Search, Human Body Search, General Search, People Counting Report, Heat Map |
Alarm
| General Alarm | Defocus Detection, Scene Change Detection, Object Left Behind, Object Removed, Auto Tracking, Motion Detection, Tampering, Human Body Detection, Video Loss, Alarm Input, Audio Detection |
| Alert Alarm | IP Conflict, Network Disconnected, Disk Offline, Disk Abnormal, Illegal Access, Hard Disk Space Low, Hard Disk Full, Recording/Snapshot Abnormal |
GUI Language
| GUI Language | 38 languages: Simplified Chinese, Traditional Chinese, English, Vietnamese, Thai, Turkish, Spanish (Latin America), Portuguese (Brazil), Spanish, Portuguese, French, German, Italian, Dutch, Polish, Czech, Hungarian, Slovak, Russian, Hebrew, Arabic, Ukrainian, Estonian, Bulgarian, Greek, Romanian, Danish, Swedish, Norwegian, Finnish, Croatian, Slovenia, Serbia, Korean, Japanese, Latvian, Lithuanian, Persian |
Hard Disk
| SATA | 4 SATA Interfaces |
| Capacity | Up to 24 TB for each HDD (the maximum HDD capacity varies with environment temperature and hard disk size; the environment temperature for use should not exceed 40°C) |
| Disk Group | Support |
| Redundant Storage | Support |
| Disk Array Type | RAID 1, 5 |
External Interface
| Network Interface | 1 RJ45 10 M/100 M/1000 M self-adaptive Ethernet Interface |
| USB | Front panel: 1 × USB2.0, Rear panel: 1 × USB3.0 |
| RS485 | 1 |
| RS232 | N/A |
| Alarm In | 16-ch |
| Alarm Out | 4-ch |
| Power Supply | AC 100 to 240 V |
| Power Switch | Support |
PoE
| PoE Interface | 16 RJ45 10 M/100 M self-adaptive Ethernet Interface |
| Max Power | Max 30 W for single port, Max 150 W in total |
| Supported Standard | IEEE 802.3at, IEEE 802.3af |
Working Environment
| Working Temperature | -10 °C to 55 °C (14 °F to 131 °F) |
| Working Humidity | ≤ 90% RH (non-condensing) |
| Power Consumption (without HDD) | ≤ 20 W |
Dimensions
| Weight (without HDD) | ≤ 4 kg (8.82 lb) |
| Dimensions | 400 mm × 368 mm × 74 mm (15.7" × 14.5" × 2.9") |
Certification
| Certification | CE; FCC; UL; RoHS; WEEE |
| CE | EN 55032, EN 61000-3-3, EN IEC 61000-3-2, EN 55035 |
| FCC | Part15 Subpart B |
Dimensions
Engineering drawing reproduced 1:1 from the official datasheet.
unit: mm (in.)
| Dimensions | 400 mm × 368 mm × 74 mm (15.7" × 14.5" × 2.9") |
| Weight (without HDD) | ≤ 4 kg (8.82 lb) |
| Power supply | AC 100–240 V |
| Consumption (without HDD) | ≤ 20 W |
Rear panel — all interfaces
Optional Mounting Accessories
Order together with the camera to save shipping.
RM-1.5U-4004-HDD 1.5U NVR rack mount
16-Port PoE 4-Bay NVR FAQ — NVR504-B-P16 Series
How many cameras can the NVR504-16B-P16 power directly?
Both models have 16 built-in PoE ports with a 150 W total budget; on the 32B-P16 the other 16 cameras join via the LAN. Each PoE port delivers up to 30 W (IEEE 802.3at/af), so typical 4–12 W IP cameras plug straight into the recorder — power and video over one cable, no separate PoE switch needed.
How many IP cameras can I connect?
The NVR504-16B-P16 records 16 IP cameras and the 32B-P16 records 32, up to 16 MP per channel. Incoming bandwidth is 320 Mbps, so size camera bitrates to stay inside that figure, and pick the channel count that leaves room to add cameras as the site grows.
What happens if a hard drive fails?
The four SATA bays (up to 24 TB each, 96 TB total) support Disk Group, Redundant Storage and RAID 1 mirroring or RAID 5 parity. A single drive failure then doesn't stop recording or lose the protected footage — worth enabling on sites where video is evidence, such as shops, warehouses and residential compounds.
Can I connect alarm sensors and sirens?
Yes — it has 16 alarm inputs and 4 alarm outputs plus an RS485 port, so PIR sensors, door contacts or sirens wire directly to the recorder and can trigger recording, snapshots or notifications alongside the video events.
Does it support face detection and smart search?
Yes — with UNV smart cameras, every channel can report Face Detection, Face Comparison, Vehicle Detection (LPR) and Temperature Detection events (up to 8 images/s total). The NVR indexes these events for VCA Search — face snapshot/comparison, vehicle and human-body search — so you jump straight to the right clip instead of scrubbing hours of video.
Can I view live video remotely?
Yes — up to 128 remote users can connect. The recorder supports P2P, DDNS, HTTP/HTTPS and RTSP and works in a browser (IE10/11, Chrome 45+, Edge 79+, Firefox 52+), so an integrator can check several client sites from one office. Outgoing bandwidth for remote streams is 160 Mbps.
Can I power a PTZ camera from one of the NVR504-16B-P16's PoE ports?
Only if the PTZ needs no more than 30 W, the per-port maximum under IEEE 802.3at, and the total of all cameras stays within 150 W. Many mini PTZs fit; larger PTZs with heaters, strong IR or Hi-PoE/802.3bt power need their own power supply or injector. Check the PTZ's maximum power and remember it peaks at night and in cold weather.
How do I connect cameras 17 to 32 on the NVR504-32B-P16?
Put them on an external PoE switch and connect that switch to the recorder's single gigabit network port, the same port that goes to the router. Then add them in the camera list by IP address. All 32 cameras share the 320 Mbps input, which averages 10 Mbps per camera, so 4 MP cameras at about 4 Mbps leave plenty of headroom.
The PoE ports on the NVR504-B-P are 10/100 Mbps. Is that enough for a 4K camera?
Yes. Each port carries a single camera, and a 4K camera on H.265 typically streams around 8 Mbps for the main stream plus a small sub-stream, far below 100 Mbps. The total for all cameras still has to stay within the 320 Mbps recording input, and live view decodes up to 4 × 4K at full resolution on H.265 (2 × 4K on H.264).
Can I plug Hikvision or Dahua cameras into the NVR504-16B-P16's PoE ports?
Power is not a problem: the ports follow IEEE 802.3af/at, so any standard PoE camera powers up. Video is the step to check: plug-and-play adding is for Uniview cameras, while third-party cameras are normally added with ONVIF after enabling ONVIF and creating an ONVIF user on the camera. The datasheet does not list ONVIF, so send us the camera models and we will confirm before you order.
What size UPS does the NVR504-16B-P16 need?
Size it for the whole system, because the cameras draw their power through the recorder: up to 20 W for the recorder without disks, plus up to 150 W of PoE, plus the four disks. With 16 cameras at an assumed 6 W the PoE part is about 96 W. Choose a UPS rated comfortably above the total and check its runtime chart at that load for the outage time you need to cover.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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