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Uniview NVR502-B-IQ Series
9/16/32-Channel 2-HDD Smart Network Video Recorder NVR502-09B-IQ / NVR502-16B-IQ / NVR502-32B-IQ — view 1
9/16/32-Channel 2-HDD Smart Network Video Recorder NVR502-09B-IQ / NVR502-16B-IQ / NVR502-32B-IQ — view 2
9/16/32-Channel 2-HDD Smart Network Video Recorder NVR502-09B-IQ / NVR502-16B-IQ / NVR502-32B-IQ — view 3
9/16/32-Channel 2-HDD Smart Network Video Recorder NVR502-09B-IQ / NVR502-16B-IQ / NVR502-32B-IQ — view 4
Uniview (UNV)B-IQ Series · 2× SATA HDD
2-HDD Network Video Recorder · B-IQ Series

NVR502-09B / 16B / 32B-IQ

9 / 16 / 32-channel network video recorder — Ultra 265 compression, 4K HDMI output, records cameras up to 16MP, dual SATA bays with RAID 1, and built-in Smart Function with face and vehicle detection.

16MP · max recordingUltra 265 · low storage4K HDMI · + VGA simultaneous2× SATA · up to 24 TB eachRAID 1 · mirrored storageONVIF · certified
Choose your size — three models on this page
Rule of thumb: count your cameras first — the 9-ch 09B-IQ suits small sites, the 16B-IQ covers mid-size sites, and the 32B-IQ handles parking lots, campuses and multi-building projects. One quirk worth knowing: even on the 32-ch model, local synchronous playback tops out at 16 channels — the other 16 still record and can be viewed live or exported, just not played back side-by-side locally at the same time. Highlighted rows in the spec table below show every other difference between the three.
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Terms · Sample orders welcome · Quotation / PI fixes models, prices, Incoterms (EXW or FOB, each quoted separately), lead time and T/T payment · Defective units: free spare units agreed per order (quantity depends on order size) and written into the quotation · Warranty: up to 5 years on Zhongxin Shutong industrial switches, manufacturer warranty on other brands · Full terms, warranty & RMA

How many terabytes for your channels and days? Use the storage calculator →

Need the PDF datasheet? Get it on WhatsApp →
Compliance:CEFCCULRoHSWEEEONVIFNDAA
Corporate orders are registered with the manufacturer under your company name — genuine supply you can verify at the source.
9/16/32Channel options
320 MbpsIncoming bandwidth (Smart Off)
24 TBMax capacity per HDD (×2)
4KHDMI output

The Uniview NVR502-B-IQ Series is a 2-HDD network video recorder offered in three sizes: NVR502-09B-IQ (9-ch), NVR502-16B-IQ (16-ch) and NVR502-32B-IQ (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 Function covering face detection, face comparison, vehicle detection (LPR) and people counting / heat map analytics. Two SATA bays each take a hard disk up to 24 TB with RAID 1 support, 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.

Small & mid-size sitesThe 9-ch 09B-IQ plus a handful of cameras is a complete kit — one box records, plays back and runs Smart Function for a small site.
Works with your existing camera networkNo built-in PoE here — that means it pairs with any IP camera or PoE switch already on site, instead of locking you into one power scheme.
Large sites needing headroomThe 32-ch 32B-IQ covers parking lots, campuses and multi-building sites — just remember local synchronous playback tops out at 16 channels at a time.
Redundant storageTwo SATA bays with RAID 1 mirroring protect footage from a single disk failure — important for sites that can't afford lost evidence.
Vehicle & people analyticsVehicle Detection (LPR), Motor/Non-Motor Vehicle Search, People Counting and Heat Map turn parking lots and storefronts into searchable, measurable traffic data.
Face-based quick searchFace Detection and Face Comparison feed Face Snapshot Search and Face Comparison Search — investigations that took hours now take minutes.
Not the right pick if you need…
  • RS232 serial control — this series has RS485 only, no RS232 port
  • RAID 0/5/6 arrays — the 2-bay Disk Array Type supports RAID 1 mirroring only, not striping or parity RAID
  • Built-in PoE for cameras — this series has no PoE ports; cameras are powered separately or via an external PoE switch
  • Full 8-channel Smart AI with third-party cameras — the deepest face/vehicle AI (up to 8-ch) requires Uniview cameras; normal/third-party cameras are limited to 2-ch face detection, 4-ch SIP or 8-ch UMD
  • 4K @ 60Hz output — HDMI tops out at 4K (3840×2160)/30Hz; 60Hz refresh is only available at 1080p and below

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Key Features

Complete list from the official datasheet.

Support Ultra H.265/H.265/H.264 video formats
Support 9/16/32-channel input
Support 1-ch HDMI, 1-ch VGA. HDMI up to 4K (3840×2160) resolution
Support HDMI and VGA independent output
Support up to 16 Megapixels resolution recording
Support ANR technology to enhance the storage reliability when the network is disconnected
Support cloud upgrade

Sharper footage. Smarter search.

Two real capabilities from the datasheet that matter every day: higher-resolution recording with mirrored dual-bay storage, and built-in AI search across faces, vehicles and people.

16MP RECORDING + RAID 1

Sharper footage, mirrored for safety

Ultra 265 compression keeps recording size efficient even at up to 16MP, and two SATA bays up to 24 TB each can mirror each other with RAID 1 — footage survives a single disk failure.

SMART SEARCH SUITE

Face, vehicle and people — all searchable

Built-in Face Detection, Face Comparison, Vehicle Detection (LPR) and People Counting/Heat Map feed AcuSearch, AcuTrack, Face Snapshot/Comparison Search and Vehicle Search — up to 8 channels with Uniview cameras — so an investigation that took hours now takes minutes.

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.

NVR502-09B-IQlive view split up to 1/4/6/8/9 · sync playback 9-ch
9cameras
NVR502-16B-IQlive view split up to 1/4/6/8/9/16 · sync playback 16-ch
16cameras
NVR502-32B-IQlive view split up to 1/4/6/8/9/16/25/32 · sync playback capped at 16-ch
32cameras

Who uses it, where it goes and how to size it

Written for the NVR502-09B-IQ / 16B-IQ / 32B-IQ from the official datasheet: 9, 16 or 32 IP channels, 320 Mbps incoming (160 Mbps with Smart On), 2 SATA bays up to 24 TB each with RAID 1, 4K HDMI, no built-in PoE.

Which size suits which installation

  • NVR502-09B-IQ: shops, clinics and small offices — Up to 9 cameras, and all 9 can be played back side by side on the local monitor. Two disk bays still give a small site mirrored evidence storage that single-bay recorders cannot.
  • NVR502-16B-IQ: mid-size sites with an existing PoE switch — 16 channels with 16-ch synchronous playback. There are no PoE ports, so it suits schools, hotels and warehouses where cameras already run through PoE switches spread around the building.
  • NVR502-32B-IQ: parking lots, campuses and multi-building sites — 32 channels in one 1U box with a 32-window live view. Local synchronous playback stays at 16 channels, and with Smart On the 160 Mbps input leaves about 5 Mbps per camera, so it fits 2–4 MP cameras best.
  • Retail and parking operators who want search and statistics — Face Snapshot Search, Motor and Non-Motor Vehicle Search, People Counting Report and Heat Map are built into the recorder, with up to 5 vehicle picture libraries (25,000 pictures).

Where and how to install the recorder

  • Rack or desk, with airflow — The case is 1U, 380 × 315 × 53 mm. For a 19-inch cabinet order the RM-1U-380 rack tray; on a desk or shelf leave free space around the vents and do not stack other equipment on top.
  • Keep the room at 40 °C or below for big disks — The recorder itself works from -10 °C to 50 °C, but the datasheet ties the 24 TB per-disk maximum to an ambient temperature of no more than 40 °C. Avoid closed cupboards, roof spaces and rooms that heat up in direct sun.
  • Power through a UPS — It runs from a DC 12 V / 3 A adapter and draws no more than 12 W without disks. Put the recorder and the camera PoE switch on the same UPS so a power cut does not stop recording or damage the disks mid-write.
  • Choose two matching surveillance disks — Use surveillance-grade SATA drives built for 24/7 writing. For RAID 1 fit two disks of the same size: the mirror only gives you the capacity of one disk, so 2 × 24 TB gives 24 TB usable.
  • Cameras on an external PoE switch — This series has no PoE ports. Connect cameras to a PoE switch (each copper run 100 m maximum) and the switch to one of the recorder's 2 gigabit RJ45 ports. The 320 Mbps maximum input fits comfortably on a gigabit link.
  • Monitor, audio and alarm wiring — HDMI goes up to 4K at 30 Hz and VGA to 1080p at 60 Hz; both can show different screens. Use the 8 alarm inputs and 2 alarm outputs for door contacts, sirens or a panel, and RS485 for a serial PTZ or keyboard.

Planning table: channels, bandwidth, disks and retention

All three sizes share the same board: 320 Mbps input (160 Mbps when Smart analysis is on), 2 disks up to 24 TB and the same decoder. What changes is the channel count, the largest live split and local playback. With every channel in use and Smart On, the 32-channel model leaves about 5 Mbps per camera, so plan it for 2–4 MP cameras rather than all-4K.

NVR502-09B-IQ · 9-chNVR502-16B-IQ · 16-chNVR502-32B-IQ · 32-ch
IP camera channels91632
Incoming bandwidth (Smart Off / Smart On)320 / 160 Mbps320 / 160 Mbps320 / 160 Mbps
Average bitrate per camera with every channel in use (Smart On)17.7 Mbps10 Mbps5 Mbps
HDD bays × max capacity per disk2 × 24 TB2 × 24 TB2 × 24 TB
Usable storage: no RAID / RAID 148 TB / 24 TB48 TB / 24 TB48 TB / 24 TB
Full-resolution live decoding (Smart Off)4 × 4K or 8 × 4MP4 × 4K or 8 × 4MP4 × 4K or 8 × 4MP
1080P streams decoded at once (Smart Off / Smart On)9 / 916 / 1216 / 12
Live view split, largest layout91632
Local synchronous playback9-ch16-ch16-ch
Retention, every channel at 4 Mbps, 2 × 24 TB without RAID123 days69 days34 days
Retention, same cameras, 2 × 24 TB in RAID 161 days34 days17 days
  • Pick the NVR502-09B-IQ for up to 9 cameras: at 4 Mbps each it keeps about 123 days on 2 × 24 TB, or 61 days mirrored.
  • Pick the NVR502-16B-IQ for 10–16 cameras when you also want all 16 played back side by side on site.
  • Pick the NVR502-32B-IQ for 17–32 cameras of 2–4 MP; with 32 cameras at 4 Mbps it holds about 34 days on 48 TB. For longer retention or more disks, look at the 4-bay NVR504-16B-IQ / 32B-IQ.

Assumption: 4 Mbps per camera, a typical continuous H.265 bitrate for a 4 MP camera; Ultra 265 or event-only recording lasts longer. Days = TB × 10^12 ÷ (cameras × bitrate ÷ 8 × 86,400), rounded down; formatted capacity is slightly lower than the label. Decoding and bandwidth 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 three models:NVR502-09B-IQ · 9-chNVR502-16B-IQ · 16-chNVR502-32B-IQ · 32-ch

Decoding

Decoding FormatUltra 265, H.265, H.264
Decoding Capability09B-IQ · Smart Off: 2×16MP@30, 2×12MP@30, 4×4K@30, 8×4MP@30, 9×3MP@30, 9×1080P@30 | Smart On: 2×12MP@30, 2×4K@30, 6×4MP@30, 8×3MP@30, 9×1080P@3016B-IQ · Smart Off: 2×16MP@30, 2×12MP@30, 4×4K@30, 8×4MP@30, 10×3MP@30, 16×1080P@30 | Smart On: 2×12MP@30, 2×4K@30, 6×4MP@30, 8×3MP@30, 12×1080P@30, 16×720P@3032B-IQ · Smart Off: 2×16MP@30, 2×12MP@30, 4×4K@30, 8×4MP@30, 10×3MP@30, 16×1080P@30, 32×720P@30 | Smart On: 2×12MP@30, 2×4K@30, 6×4MP@30, 8×3MP@30, 12×1080P@30, 24×720P@30, 32×D1
Decoding Capability DescriptionThe 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 CompressionG.711A, G.711U

Network

Incoming BandwidthSmart Off: 320 Mbps | Smart On: 160 Mbps
Outgoing Bandwidth160 Mbps
Remote Users128
ProtocolsTCP/IP, P2P, NTP, DHCP, PPPoE, HTTP, HTTPS, DNS, DDNS, SNMP, SMTP, NFS, RTSP, IPv6, IPv4
Browser (Plugin)IE10, IE11, Chrome 45+, Edge 79+, Firefox 52+

Video/Audio Input

IP Video Input09B-IQ · 9-ch16B-IQ · 16-ch32B-IQ · 32-ch
RCA Audio Input1-ch
IP Speaker (Peripheral Input)16-ch
POS (Peripheral Input)All channels

Video/Audio Output

HDMI Output4K (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 Output1920×1080/60 Hz, 1920×1080/50 Hz, 1600×1200/60 Hz, 1280×1024/60 Hz, 1280×720/60 Hz, 1024×768/60 Hz
RCA Audio Output1-ch
Liveview Display09B-IQ · 1/4/6/8/916B-IQ · 1/4/6/8/9/1632B-IQ · 1/4/6/8/9/16/25/32
Corridor Mode Screen09B-IQ · 3/4/5/7/916B-IQ · 3/4/5/7/9/10/12/1632B-IQ · 3/4/5/7/9/10/12/16/32
Two-way Audio1-ch, RCA (using the audio input and output)
SnapshotFTP/Schedule/Event Snapshot; 4-ch snapshot (max. 8 MP (3840×2160) video resolution, with 1080P snapshot resolution)

Recording

Recording Resolution16 MP / 12 MP / 8 MP / 6 MP / 5 MP / 4 MP / 3 MP / 1080P / 960P / 720P / D1 / 2CIF / CIF
Synchronous Playback in Local09B-IQ · 9-ch16B-IQ · 16-ch32B-IQ · 16-ch

Smart Function

Smart by IPCAll channels (up to 8 images/s in total) Face Detection, Face Comparison, Vehicle Detection (LPR), Temperature Detection, SIP, UMD, Video Metadata, Traffic Monitoring
Smart by NVRFace Detection, Face Comparison, Smart Intrusion Prevention (SIP), Ultra Motion Detection (UMD)
Smart by NVR Analyzer ModeSingle Mode (Face Recognition), Single Mode (SIP), Single Mode (UMD), Single Mode (AcuSearch/AcuTrack); modes cannot activate simultaneously, only one mode can activate at a time
VCA SearchAcuSearch, AcuTrack, Face Snapshot Search, Face Comparison Search, Motor Vehicle Search, Non-Motor Vehicle Search, Human Body Search, General Search, People Counting Report, Heat Map
AcuSearchAll channels with UNV SIP/UMD Camera
AcuTrackAll channels with UNV SIP/UMD Camera
by NVR (Face Detection capacity)Up to 8-ch with UNV Face Detection Camera, Up to 2-ch with normal camera (UNV and Third-part brand, 2-ch 2MP, 1-ch 4MP)
Search by ImageSupport
Vehicle Picture LibraryUp to 5 vehicle picture libraries, with up to 25,000 vehicle pictures in total
SIP by NVR with normal camerasUp to 4-ch with normal camera (UNV and Third-part brand, 4-ch 2MP, 2-ch 4MP, 1-ch 4K)
UMD by NVR with normal camerasUp to 8-ch with normal camera (UNV and Third-part brand, 8-ch 2MP, 4-ch 4MP, 2-ch 4K)
Capacity of Snapshot Records2 millions records for face snapshot, 2 millions records for vehicle snapshot, 3 millions records for SIP, 2 millions records for video Metadata

Alarm

General AlarmDefocus Detection, Scene Change Detection, Object Left Behind, Object Removed, Auto Tracking, Motion Detection, Tampering, Human Body Detection, Video Loss, Alarm Input, Audio Detection
Alert AlarmIP Conflict, Network Disconnected, Disk Offline, Disk Abnormal, Illegal Access, Hard Disk Space Low, Hard Disk Full, Recording/Snapshot Abnormal, Array Damaged, Array Degraded

GUI Language

GUI Language38 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

SATA2 SATA Interfaces
CapacityUp 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 GroupSupport
Redundant StorageSupport
Disk Array TypeRAID 1

External Interface

Network Interface2 RJ45 10 M/100 M/1000 M self-adaptive Ethernet Interface
USBFront panel: 1 × USB2.0, Rear panel: 1 × USB2.0, 1 × USB3.0
RS4851
RS232N/A
Alarm In8-ch
Alarm Out2-ch
Power SupplyDC 12 V / 3 A
Power SwitchSupport

Working Environment

Working Temperature-10 °C to 50 °C (14 °F to 122 °F)
Working Humidity≤ 90% RH (non-condensing)
Power Consumption (without HDD)≤ 12 W

Dimensions

Weight (without HDD)≤ 2 Kg (4.4 lb)
Height1U
Dimensions380 mm × 315 mm × 53 mm (15.0" × 12.4" × 2.1")

Certification

CertificationCE; FCC; UL; RoHS; WEEE
CEEN 55032, EN 61000-3-3, EN IEC 61000-3-2, EN 55035
FCCPart15 Subpart B

Dimensions

Engineering drawing reproduced 1:1 from the official datasheet.

NVR502-09B-IQ / NVR502-16B-IQ / NVR502-32B-IQ dimensions drawing in mm
unit: mm (in.)
Dimensions380 mm × 315 mm × 53 mm (15.0" × 12.4" × 2.1")
Weight (without HDD)≤ 2 Kg (4.4 lb)
Power supplyDC 12 V / 3 A
Consumption (without HDD)≤ 12 W
NVR502-B-IQ series rear panel
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 AI NVR FAQ — NVR502-B-IQ Series

How many IP cameras can I connect?
The NVR502-09B-IQ takes 9 IP cameras, the 16B-IQ 16 and the 32B-IQ 32, recording up to 16 MP per channel. Incoming bandwidth is 320 (160 with Smart mode on) 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.
What AI functions are built into the recorder itself?
The NVR runs Face Detection, Face Comparison, Smart Intrusion Prevention (SIP) and Ultra Motion Detection on board: up to 8 face channels with UNV face-detection cameras or 2 with standard cameras, plus SIP on 4 and UMD on 8 standard channels. AcuSearch, AcuTrack and face/vehicle/human-body search make playback filterable.
Can I find a person from a photo?
Yes — Search by Image is supported: load a face picture and the recorder hunts for matches in its indexed snapshots. It keeps up to 2 million face snapshot records and 2 million vehicle records, so even busy commercial sites stay searchable months later.
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 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.
Will the NVR502-16B-IQ record Hikvision, Dahua or other non-Uniview IP cameras?
Yes for recording and live view: the datasheet itself counts third-party cameras in its smart-function limits. Add them with the ONVIF protocol (enable ONVIF and create an ONVIF user on the camera first). The NVR-side AI is limited with these normal cameras: face detection on up to 2 channels, SIP on up to 4 and UMD on up to 8; the 8-channel face capacity needs Uniview face detection cameras. The datasheet does not print an ONVIF profile list, so send us the camera model and we will confirm before you order.
How many 4K cameras can the NVR502-32B-IQ handle?
It is limited by bandwidth, not by resolution. At a typical 8 Mbps per 4K H.265 camera, 32 cameras need 256 Mbps: that fits the 320 Mbps Smart Off input, but with Smart On (160 Mbps) only 20 cameras fit at 8 Mbps, or all 32 at 5 Mbps with Ultra 265. On the monitor it decodes 4 × 4K at full resolution (2 × 4K with Smart On); larger splits use the cameras' sub-streams. 32 × 8 Mbps fills 48 TB in about 17 days.
Can the NVR502-B-IQ run face recognition and intrusion detection at the same time?
Not when the recorder does the analysis itself: its analyzer runs one mode at a time (Face Recognition, SIP, UMD or AcuSearch/AcuTrack). If the cameras do the analysis (Smart by IPC), every channel can send face, LPR, SIP or UMD events together, up to 8 images per second in total. So for mixed AI on one site, choose Uniview smart cameras and keep the NVR as the search engine.
Which hard disks should I buy for the NVR502-B-IQ, and does a 24 TB disk always work?
Use 3.5-inch SATA surveillance drives rated for 24/7 recording; desktop drives wear out faster under constant writing. Each of the 2 bays takes up to 24 TB, but the datasheet notes that the maximum depends on the disk and on ambient temperature, which should not exceed 40 °C. For hot rooms without air conditioning, smaller disks or better ventilation are the safer choice; tell us the disk model and we will check it.
Does the NVR502-B-IQ keep recording if the network between the cameras and the recorder drops?
It supports ANR (automatic network replenishment): cameras that have a microSD card and support ANR keep recording locally during the outage, and the recorder copies the missing footage back when the link returns. Cameras without a card leave a gap. Put the PoE switch on the same UPS as the recorder, and the recorder raises a Network Disconnected alert so you know when a link drops.
Should I choose the NVR502-16B-IQ or the PoE version NVR502-16B-P16-IQ?
Choose the 16B-IQ when cameras are far apart or already connected to PoE switches in several places: the recorder can sit in an office and only needs one network cable. Choose the P16 version when all cameras can be cabled back to the recorder within 100 m, so it powers them directly and you skip a separate switch. Both are 2-bay IQ recorders; compare the PoE budget on the NVR502-08B-P8-IQ / 16B-P16-IQ / 32B-P16-IQ page.

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