




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.
Lead time · In stock: at your forwarder’s China warehouse 3 days after payment · Not in stock: 7–15 working days · Then air 5–10 days / sea 25–45 days to your port
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 →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.
- 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.
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.
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.
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.
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-ch | NVR502-16B-IQ · 16-ch | NVR502-32B-IQ · 32-ch | |
|---|---|---|---|
| IP camera channels | 9 | 16 | 32 |
| Incoming bandwidth (Smart Off / Smart On) | 320 / 160 Mbps | 320 / 160 Mbps | 320 / 160 Mbps |
| Average bitrate per camera with every channel in use (Smart On) | 17.7 Mbps | 10 Mbps | 5 Mbps |
| HDD bays × max capacity per disk | 2 × 24 TB | 2 × 24 TB | 2 × 24 TB |
| Usable storage: no RAID / RAID 1 | 48 TB / 24 TB | 48 TB / 24 TB | 48 TB / 24 TB |
| Full-resolution live decoding (Smart Off) | 4 × 4K or 8 × 4MP | 4 × 4K or 8 × 4MP | 4 × 4K or 8 × 4MP |
| 1080P streams decoded at once (Smart Off / Smart On) | 9 / 9 | 16 / 12 | 16 / 12 |
| Live view split, largest layout | 9 | 16 | 32 |
| Local synchronous playback | 9-ch | 16-ch | 16-ch |
| Retention, every channel at 4 Mbps, 2 × 24 TB without RAID | 123 days | 69 days | 34 days |
| Retention, same cameras, 2 × 24 TB in RAID 1 | 61 days | 34 days | 17 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).
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 09B-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 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 | Smart Off: 320 Mbps | Smart On: 160 Mbps |
| Outgoing Bandwidth | 160 Mbps |
| Remote Users | 128 |
| Protocols | TCP/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 Input | 09B-IQ · 9-ch16B-IQ · 16-ch32B-IQ · 32-ch |
| RCA Audio Input | 1-ch |
| IP Speaker (Peripheral Input) | 16-ch |
| POS (Peripheral Input) | All channels |
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-IQ · 1/4/6/8/916B-IQ · 1/4/6/8/9/1632B-IQ · 1/4/6/8/9/16/25/32 |
| Corridor Mode Screen | 09B-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 Audio | 1-ch, RCA (using the audio input and output) |
| Snapshot | FTP/Schedule/Event Snapshot; 4-ch snapshot (max. 8 MP (3840×2160) video resolution, with 1080P 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-IQ · 9-ch16B-IQ · 16-ch32B-IQ · 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 |
| Smart by NVR | Face Detection, Face Comparison, Smart Intrusion Prevention (SIP), Ultra Motion Detection (UMD) |
| Smart by NVR Analyzer Mode | Single 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 Search | AcuSearch, AcuTrack, Face Snapshot Search, Face Comparison Search, Motor Vehicle Search, Non-Motor Vehicle Search, Human Body Search, General Search, People Counting Report, Heat Map |
| AcuSearch | All channels with UNV SIP/UMD Camera |
| AcuTrack | All 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 Image | Support |
| Vehicle Picture Library | Up to 5 vehicle picture libraries, with up to 25,000 vehicle pictures in total |
| SIP by NVR with normal cameras | Up 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 cameras | Up to 8-ch with normal camera (UNV and Third-part brand, 8-ch 2MP, 4-ch 4MP, 2-ch 4K) |
| Capacity of Snapshot Records | 2 millions records for face snapshot, 2 millions records for vehicle snapshot, 3 millions records for SIP, 2 millions records for video Metadata |
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, Array Damaged, Array Degraded |
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 panel: 1 × USB2.0, Rear panel: 1 × USB2.0, 1 × USB3.0 |
| RS485 | 1 |
| RS232 | N/A |
| Alarm In | 8-ch |
| Alarm Out | 2-ch |
| Power Supply | DC 12 V / 3 A |
| Power Switch | Support |
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) |
| Height | 1U |
| 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.

| Dimensions | 380 mm × 315 mm × 53 mm (15.0" × 12.4" × 2.1") |
| Weight (without HDD) | ≤ 2 Kg (4.4 lb) |
| Power supply | DC 12 V / 3 A |
| Consumption (without HDD) | ≤ 12 W |

Optional Mounting Accessories
Order together with the camera to save shipping.
9/16/32-Channel AI NVR FAQ — NVR502-B-IQ Series
How many IP cameras can I connect?
What happens if a hard drive fails?
What AI functions are built into the recorder itself?
Can I find a person from a photo?
Does it have built-in PoE ports?
Can I view live video remotely?
Will the NVR502-16B-IQ record Hikvision, Dahua or other non-Uniview IP cameras?
How many 4K cameras can the NVR502-32B-IQ handle?
Can the NVR502-B-IQ run face recognition and intrusion detection at the same time?
Which hard disks should I buy for the NVR502-B-IQ, and does a 24 TB disk always work?
Does the NVR502-B-IQ keep recording if the network between the cameras and the recorder drops?
Should I choose the NVR502-16B-IQ or the PoE version NVR502-16B-P16-IQ?
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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