NVR / Recorders › NVR502-09B / 16B / 32B
Uniview (UNV)B Series · 2× SATA HDD
2-HDD Network Video Recorder · B Series
NVR502-09 / 16 / 32B
9 / 16 / 32-channel network video recorder — Ultra 265 compression, 4K HDMI output, records cameras up to 16MP, with built-in Smart detection (face, vehicle, temperature) and RAID 1 dual-disk support.
16MP · max recordingUltra 265 · low storage4K HDMI · + VGA simultaneous2× SATA · up to 24 TB · RAID 1Smart Detection · built in38 languages · local interface
Choose your size — three models on this page
Rule of thumb: count your cameras, then leave room to grow — a site with 9 cameras runs comfortably on the 09B; pick the 16B or 32B if you may add cameras later, or need the extra HDD bay for RAID 1 redundancy. Highlighted rows in the spec table below show every difference between the three.
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How many terabytes for your channels and days? Use the storage calculator →
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The Uniview NVR502-B Series is a 2-HDD network video recorder offered in three sizes: NVR502-09B (9-ch), NVR502-16B (16-ch) and NVR502-32B (32-ch). All three record cameras up to 16MP with Ultra 265 / H.265 / H.264 compression, output simultaneously over 4K HDMI and VGA, and include built-in Smart by IPC detection (Face Detection, Face Comparison, Vehicle Detection, Temperature Detection) plus VCA search (face, vehicle, human body, people counting, heat map). Two SATA bays each take a hard disk up to 24 TB with RAID 1 mirroring support; 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.
Right-sized, room to growThe 9-ch 09B covers a compact site today; the 16B and 32B share the same 2-bay chassis so you can size up without learning a new interface.
Large sites need disk redundancyTwo SATA bays with RAID 1 mirroring mean a single disk failure doesn't wipe out your footage — worth it once a site runs 16 or 32 cameras.
AI-assisted monitoringBuilt-in Face Detection, Face Comparison, Vehicle Detection (LPR) and Temperature Detection flag real events across all channels — no more scrubbing hours of empty footage.
Search by event, not by scrubbingVCA Search finds a face, a vehicle, a person or a crowd spike in seconds — with People Counting Report and Heat Map for foot-traffic analysis.
Remote viewing on phoneP2P protocol built in — the owner checks the site from a phone app without a fixed IP or network skills.
Fast backup via USB 3.0Three USB ports total — one on the front for quick access, plus one USB 2.0 and one USB 3.0 on the rear — pulling recorded footage onto a drive is fast even with everything else plugged in.
Not the right pick if you need…
- PoE ports — cameras need a separate PoE switch (we bundle one at combo price)
- RS232 serial control — the port is N/A on this series (RS485 is present for PTZ control)
- More than 2 hard disks or RAID 5/6/10 — this chassis has 2 SATA bays with RAID 1 (mirroring) only
- Simultaneous local snapshot on more than 4 channels — Snapshot is capped at 4-ch (max. D1 resolution) regardless of model size
- Full 32-channel synchronous local playback on the NVR502-32B — local playback tops out at 16-ch even though this model accepts 32 camera inputs
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Key Features
Complete list from the official datasheet.
Support Ultra 265/H.265/H.264 video formats
9/16/32-channel input
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
Protects your footage. Finds the moment.
Two real capabilities from the datasheet that matter every day: disk redundancy and built-in smart search.
RAID 1 MIRRORING
One disk fails, footage survives
Two SATA bays run in RAID 1 mirroring — if one disk fails, the second keeps recording and holds an identical copy, so a hardware failure doesn't mean lost evidence.
SMART BY IPC
Real alerts, not hours of nothing
Built-in Face Detection, Face Comparison, Vehicle Detection (LPR) and Temperature Detection run across all channels (up to 8 images/s total), feeding Face Snapshot Search, Motor/Non-Motor Vehicle Search, Human Body Search, People Counting Report and Heat Map — search by event, not by scrubbing the timeline.
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.
NVR502-09Blive view split 1/4/6/8/9 · sync playback 9-ch
9cameras
NVR502-16Blive view split 1/4/6/8/9/16 · sync playback 16-ch
16cameras
NVR502-32Blive view split up to 1/4/6/8/9/16/25/32 · sync playback 16-ch
32cameras
Who uses it, where it goes and how to install it
Written for the NVR502-09B, NVR502-16B and NVR502-32B from the official datasheet: 9, 16 or 32 channels without built-in PoE, 320 Mbps incoming, two gigabit network ports, 2 SATA bays up to 24 TB each with RAID 1, 8 alarm inputs / 2 outputs, DC 12 V / 3 A supply.
Which size suits which installation
- NVR502-09B: 5–9 cameras that need RAID and alarms — Pharmacies, jewellers and small offices: 9 channels with about 35 Mbps of input each, 9-window live view, 9-channel synchronous playback, mirrored disks and the same 8 in / 2 out alarm terminals as the larger sizes.
- NVR502-16B: 10–16 cameras on existing network switches — Hotels, schools and office floors where cameras are spread over several PoE switches or fibre links: 20 Mbps per camera, 16-window view and 16-channel playback, connected over gigabit ports instead of short PoE runs to the recorder.
- NVR502-32B: 17–32 cameras, one control room — Factories, campuses and car parks: 32-window live view on one monitor, 10 Mbps per camera from the 320 Mbps input. Local synchronous playback is limited to 16 channels at a time.
- Upgrades of an existing IP system — When the cameras are already cabled and powered from switches, this PoE-free recorder replaces an old NVR without re-cabling; with Uniview AI cameras, their own detections (Smart by IPC) become searchable on the recorder.
Where and how to install the recorder
- Rack or desk in a cool room — The 380 × 315 × 53 mm case (about 2 kg without disks) mounts in a 19-inch cabinet with the RM-1U-380 kit or sits flat on a desk. It works from -10 °C to 55 °C, but the largest disks need the room at 40 °C or less; leave air space at the sides and back.
- 12 V adapter, and a UPS for the switches too — The recorder runs from a DC 12 V / 3 A adapter and has a power switch; it draws ≤ 20 W without disks. Because the cameras are powered by separate PoE switches, put the NVR, every PoE switch and the router on UPS power, otherwise the recorder stays on but the cameras go dark in a power cut.
- Two disks: mirror or capacity — Fit two identical surveillance-grade SATA drives. Use them separately for up to 48 TB, or in RAID 1 for 24 TB maximum with protection against one disk failing. Decide during commissioning, because building the array formats the disks.
- Network design with the two gigabit ports — Cameras connect through PoE switches (copper runs up to 100 m, fibre beyond that) whose gigabit uplinks go to the NVR. A common layout is cameras on one LAN port and the office router on the other, keeping camera traffic off the office network; confirm the network mode settings with us for your firmware.
- Alarm wiring, RS485 and monitors — Land door contacts and panic buttons on the 8 alarm inputs and use the 2 outputs to trigger a siren or strobe through a relay with its own supply. HDMI (up to 4K) and VGA are independent; VGA carries live video by default, so clear the VGA video on the preview page to get the highest resolution on HDMI.
Planning table: channels, bandwidth, disk and retention
The three sizes share the chassis, 320 Mbps input, two gigabit ports and two disk bays; only channels, layouts and playback differ. None has PoE, so budget a PoE switch port for every camera.
| NVR502-09B | NVR502-16B | NVR502-32B | |
|---|---|---|---|
| IP channels | 9 | 16 | 32 |
| PoE switch ports needed (no PoE on the NVR) | 9 | 16 | 32 |
| Incoming bandwidth per camera (320 Mbps shared) | ≈35 Mbps | 20 Mbps | 10 Mbps |
| Full-quality decoding (H.265) | 4 × 4K@30, 9 × 3MP@30 | 4 × 4K@30, 16 × 1080P@30 | 4 × 4K@30, 32 × 960P@25 |
| Live view max / local synchronous playback | 9 / 9-ch | 16 / 16-ch | 32 / 16-ch |
| Days on 2 × 8 TB (16 TB), every channel at 4 Mbps | ≈41 days | ≈23 days | ≈11.6 days |
| Days on 2 × 24 TB (48 TB), every channel at 4 Mbps | ≈123 days | ≈69 days | ≈35 days |
| Days with 2 × 24 TB in RAID 1 (24 TB usable) | ≈62 days | ≈35 days | ≈17 days |
| Network / power | 2 × 1000M RJ45 · DC 12 V / 3 A | 2 × 1000M RJ45 · DC 12 V / 3 A | 2 × 1000M RJ45 · DC 12 V / 3 A |
- Pick the NVR502-09B for up to 9 cameras: there is about 35 Mbps per camera, so even 4K cameras at high quality fit, and 2 × 8 TB keeps about 41 days at 4 Mbps each.
- Pick the NVR502-16B for 10–16 cameras; with RAID 1 on 2 × 24 TB you still get about 35 days at 4 Mbps each.
- Pick the NVR502-32B for 17–32 cameras, keep each at 10 Mbps or less, and remember that local playback shows 16 channels at once; at 4 Mbps each, 48 TB lasts about 35 days.
Retention = usable TB × 10^12 ÷ (cameras × bitrate ÷ 8 × 86400 s), assuming 4 Mbps per camera (typical 4 MP H.265, 24 h recording). RAID 1 usable space = one disk. Bandwidth per camera = 320 Mbps ÷ channels. Other values: official datasheet.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the three models:NVR502-09B · 9-chNVR502-16B · 16-chNVR502-32B · 32-ch
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 09B · Ultra 265/H.265: 2×16MP@30, 2×12MP@30, 4×4K@30, 6×5MP@30, 8×4MP@30, 9×3MP@30 | H.264: 2×16MP(4800×2688)@30, 2×12MP@30, 2×4K@30, 4×5MP@30, 6×4MP@30, 8×3MP@30, 9×1080P@3016B · 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 · 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, IPv6, IPv4 |
| Browser (Plugin) | IE10, IE11, Chrome 45+, Edge 79+, Firefox 52+ |
Video/Audio Input
| IP Video Input | 09B · 9-ch16B · 16-ch32B · 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 | 09B · 1/4/6/8/916B · 1/4/6/8/9/1632B · 1/4/6/8/9/16/25/32 |
| Corridor Mode Screen | 09B · 3/4/5/7/916B · 3/4/5/7/9/10/12/1632B · 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 | 09B · 9-ch16B · 16-ch32B · 16-ch |
Smart
| 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 | 2 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 |
External Interface
| Network Interface | 2 RJ45 10 M/100 M/1000 M self-adaptive Ethernet Interface |
| USB | Front: 1 × USB 2.0, Rear panel: 1 × USB 2.0, 1 × USB 3.0 |
| RS485 | 1 |
| RS232 | N/A |
| Alarm In | 8-ch |
| Alarm Out | 2-ch |
| Power Supply | DC 12 V / 3 A |
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) | ≤ 2 kg (4.40 lb) |
| Dimensions | 380 mm × 315 mm × 53 mm (15.0" × 12.4" × 2.1") |
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 | 380 × 315 × 53 mm (15.0" × 12.4" × 2.1") |
| Weight (without HDD) | ≤ 2 kg (4.40 lb) |
| Power supply | DC 12 V / 3 A |
| Consumption (without HDD) | ≤ 20 W |
Rear panel — all interfaces
Optional Mounting Accessories
Order together with the camera to save shipping.
RM-1U-3802-HDD 1U NVR rack mount tray
9/16/32-Channel NVR FAQ — NVR502-B Series
How many IP cameras can I connect?
The NVR502-09B takes 9 IP cameras, the 16B 16 and the 32B 32, recording 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 two SATA bays (up to 24 TB each) support Disk Group and Redundant Storage with RAID 1 mirroring, so both disks hold an identical copy of critical footage. 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.
Does it have built-in PoE ports?
No — this series has no PoE ports. It connects through two gigabit RJ45 interfaces, and cameras are powered by an external PoE switch on the LAN. That layout suits projects where cameras are spread across floors or buildings rather than home-run to the recorder.
Can I connect alarm sensors and sirens?
Yes — it has 8 alarm inputs and 2 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.
What PoE switch do I need with the NVR502-16B?
One PoE port per camera, a PoE budget above the sum of your cameras' maximum power, and a gigabit uplink to the NVR. For example, 16 fixed cameras at an assumed 6 W each need about 96 W, so choose a 16-port switch with comfortably more than that. Sixteen cameras at 4 Mbps send 64 Mbps; a gigabit uplink keeps headroom when you raise bitrates, as the NVR accepts up to 320 Mbps.
What are the two network ports on the NVR502-B for?
Both are 10/100/1000M RJ45 ports. The usual design is one port for the camera switches and one for the office router or internet, so heavy camera traffic stays off the office network and remote viewing still works. The datasheet does not describe the network modes, so tell us your layout and we will confirm the settings for your firmware.
Should I choose the NVR502-16B or the NVR502-16B-P16 with built-in PoE?
Choose the 16B-P16 when all cameras can be cabled straight to the recorder (each run up to 100 m): it powers them from 16 ports with 240 W. Choose the 16B when cameras are spread over several buildings or floors with their own switches or fibre: it has two gigabit network ports instead of one, a small DC 12 V / 3 A supply instead of AC, and is about 2 kg instead of 2.6 kg. Recording, decoding, disks, RAID 1 and alarm terminals are the same.
Why does the NVR502-09B have 9 channels instead of 8?
Nine matches the 3 × 3 live-view layout: the 09B shows all 9 cameras in one 9-window screen and plays back all 9 in sync locally. It is a practical size for a site with 8 cameras plus one spare channel, for example for a later PTZ or an entrance camera. For 10 or more cameras, the 16B is the next step.
Can I use cameras from other brands (ONVIF) on the NVR502-09B / 16B / 32B?
ONVIF is not in the official datasheet's protocol list (RTSP is), so send us your camera models to confirm before ordering. Third-party cameras are added manually with the ONVIF protocol, IP, user name and password. This non-IQ recorder has no analysis of its own: face, vehicle and human body search only work with cameras that send those events (Smart by IPC), so a basic third-party camera will just record.
Can the NVR502-B run from a 12 V battery backup?
Its input is DC 12 V / 3 A, so a regulated 12 V DC backup supply rated for at least 3 A can feed it; do not wire it straight to a lead-acid battery, whose voltage rises well above 12 V while charging. Remember the disks and the PoE switches feeding the cameras need backup too, so for most sites an AC UPS covering the NVR adapter, switches and router is simpler. The recorder itself draws ≤ 20 W without disks.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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