NVR / Recorders › NVR304-16B-IQ / 32B-IQ
Uniview (UNV)NVR304-B-IQ Series · 4× SATA HDD
4-HDD Network Video Recorder · NVR304-B-IQ Series
NVR304-16 / 32B-IQ
16 / 32-channel network video recorder — four SATA bays for large-capacity storage, Ultra 265 compression, 4K HDMI output, records cameras up to 12MP, with onboard Face Detection, Vehicle Detection (LPR) and AI smart search.
12MP · max recordingUltra 265 · low storage4× SATA · up to 24 TB eachAI Search · face & vehicle detection4K HDMI · + VGA simultaneous38 languages · local interface
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-IQ if you're combining several buildings or expect to add cameras later. Highlighted rows in the spec table below show every difference between the two.
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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
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How many terabytes for your channels and days? Use the storage calculator →
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The Uniview NVR304-B-IQ Series is a 4-HDD network video recorder offered in two sizes: NVR304-16B-IQ (16-ch) and NVR304-32B-IQ (32-ch). Both record cameras up to 12MP with Ultra 265 / H.265 / H.264 compression, output simultaneously over 4K HDMI and VGA, and include built-in Face Detection, Face Comparison, Vehicle Detection (LPR) and AcuSearch / AcuTrack smart search. Four independent SATA bays each take a hard disk up to 24 TB, 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.
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.
Growing camera countsBuy channels you don't use yet: the 32B-IQ lets you add cameras later without replacing the recorder.
Remote viewing on phoneP2P protocol built in — the manager checks every site from a phone app without a fixed IP or network skills.
Local-language interface38 GUI languages including Spanish (Latin America), Portuguese (Brazil) and French — your customer operates it in their own language.
Longer video retention per driveUltra 265 roughly halves file size versus H.264 — the same 24 TB disk keeps weeks more footage.
Quick incident lookup across many channelsBuilt-in Face Detection, Face Comparison and Vehicle Detection (LPR) feed AcuSearch, AcuTrack and Face Snapshot Search — jump straight to the clip you need instead of scrubbing hours of footage across 16 or 32 channels.
Not the right pick if you need…
- PoE ports — cameras need a separate PoE switch (this recorder has no built-in PoE ports)
- Serial PTZ control from the NVR itself — RS485 and RS232 are both listed N/A on this series
- Physical alarm input/output terminals — Alarm In and Alarm Out are both N/A on the rear panel
- 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 DC 12 V/5 A power supply, no built-in PSU redundancy
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Key Features
Complete list from the official datasheet.
Support Ultra H.265/H.265/H.264 video formats
Support 16/32 channel input
Support 1 ch HDMI, 1 ch VGA. HDMI up to 4K (3840x2160) resolution
Support HDMI and VGA simultaneous output
Support up to 12 Megapixels resolution recording
Support ANR technology to enhance the storage reliability when the network is disconnected
Support cloud upgrade
Four bays of storage. AI finds the moment.
Two real capabilities that define this series: large multi-bay storage and onboard AI search.
4-BAY STORAGE
Room to grow, in one box
Four independent SATA bays each take a disk up to 24 TB — up to 96 TB in one recorder, useful for high channel counts or long retention without an external storage array.
AI SEARCH
Find the moment, not the footage
Built-in Face Detection, Face Comparison and Vehicle Detection (LPR) on the camera side feed AcuSearch, AcuTrack, Face Snapshot Search and Human Body Search on the recorder — narrow hours of footage down to the exact clip.
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.
NVR304-16B-IQ16-ch input · Smart Off decoding up to 2×12MP@30 · live view split up to 16
16cameras
NVR304-32B-IQ32-ch input · Smart Off decoding up to 2×12MP@30 · live view split up to 32
32cameras
Who uses it, where to install it and how to size it
Written for the NVR304-16B-IQ and NVR304-32B-IQ from the official datasheet: 16 or 32 channels, 160 Mbps incoming bandwidth, 4 SATA bays up to 24 TB each, recording up to 12 MP, 2 gigabit ports, no built-in PoE.
Who it is for
- Sites that must keep footage for months — Four bays take up to 96 TB: 16 cameras at 4 Mbps keep about 139 days, where a 2-bay recorder would keep half that. Useful where owners, insurers or local rules ask for long retention.
- Single large buildings (16B-IQ) — A warehouse, factory floor, supermarket or hotel with up to 16 cameras: 10 Mbps per camera on average leaves room for 8 MP cameras, and a 16-screen live view shows everything on one monitor.
- Campuses and multi-building sites (32B-IQ) — Schools, compounds and industrial parks that bring several buildings to one recorder over fibre-linked PoE switches; plan about 5 Mbps per camera to fit 32 cameras in the 160 Mbps bandwidth.
- Retail, gates and parking with Uniview smart cameras — POS overlay on all channels, People Counting Report and Heat Map for shops, and up to 5 vehicle libraries with 25,000 pictures for gates and car parks when the LPR and face cameras are Uniview.
Where and how to install
- Cabinet shelf or desk, locked away — The chassis is 440 × 350 × 48 mm and weighs about 3.4 kg without disks, plus roughly the weight of four 3.5-inch drives. Put it on a fixed shelf in a 19-inch cabinet or on a solid desk, in a locked room, and leave the front clear to reach the USB port.
- Four disks make heat: stay below 40 °C — The datasheet limits the environment to 40 °C when the disks are in use, even though the recorder itself is rated -10 °C to 55 °C. With four drives inside, leave space on both sides, do not put it directly under a PoE switch, and use an air-conditioned room or a cabinet with fans in hot climates.
- PoE switches and uplink — There are no PoE ports, so the cameras connect through PoE switches with a gigabit uplink to one of the 2 gigabit RJ45 ports (1000 M). Keep each copper run under 100 m from switch to camera; link distant buildings to the core switch with fibre SFP modules.
- Power and UPS — The recorder runs on a single DC 12 V / 5 A adapter (no redundant power input) and draws ≤ 12 W without disks. Put the recorder and every PoE switch on a UPS sized for the switches' PoE load, so a power cut does not stop recording or corrupt a disk.
- Monitor, audio and exports — HDMI (up to 4K) and VGA work at the same time, for example one screen in the guard room and one in the manager's office. RCA audio in and out give 1-channel two-way audio; the rear USB 3.0 port is the faster choice for exporting long clips.
Planning table: 16B-IQ or 32B-IQ
Both share 160 Mbps of incoming bandwidth and four 24 TB bays (96 TB). The 32B-IQ adds channels, a 25/32-screen live view and 32 × D1 decoding, but not bandwidth or disk space, so with all 32 cameras each one gets half the bitrate and half the days. At the full 160 Mbps, 96 TB lasts about 55.6 days on either model.
| NVR304-16B-IQ | NVR304-32B-IQ | |
|---|---|---|
| IP channels | 16 | 32 |
| Incoming bandwidth (all cameras together) | 160 Mbps | 160 Mbps |
| Average bitrate per camera with every channel used | 10 Mbps | 5 Mbps |
| HDD bays × max capacity (total) | 4 × 24 TB (96 TB) | 4 × 24 TB (96 TB) |
| Built-in PoE | — | — |
| Decoding, Smart Off | 2×12MP, 2×4K, 4×4MP, 10×1080P, 16×720P | 2×12MP, 2×4K, 4×4MP, 10×1080P, 20×720P, 32×D1 |
| Decoding, Smart On | 2×4K, 4×4MP, 8×1080P, 16×720P | 2×4K, 4×4MP, 8×1080P, 16×720P, 32×D1 |
| Max live view split / sync playback | 16 · 16-ch | 32 · 16-ch |
| Retention on 96 TB, all channels at 4 Mbps (days) | ≈ 139 | ≈ 69 |
| Retention on 96 TB, all channels at 8 Mbps (days) | ≈ 69 | — (256 Mbps > 160 Mbps) |
- Pick the 16B-IQ for up to 16 cameras, including 8 MP models: at 8 Mbps each, 96 TB keeps about 69 days.
- Pick the 32B-IQ for 17 to 32 cameras at about 5 Mbps average (2 MP to 4 MP in H.265 or Ultra 265); 32 cameras at 4 Mbps keep about 69 days.
- Do not need more than 48 TB? The 2-bay NVR302-16B-IQ / 32B-IQ has the same 160 Mbps bandwidth and decoding in a smaller case.
Retention = total disk TB × 10^12 ÷ (cameras × bitrate ÷ 8 × 86400 s), continuous recording on four 24 TB disks, no reserve. 4 Mbps is an assumed average for a 4 MP H.265 camera, 8 Mbps for an 8 MP camera. Decoding figures are @30 fps from the official datasheet; live view of many cameras uses sub-streams.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the two models:NVR304-16B-IQ · 16-chNVR304-32B-IQ · 32-ch
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 16B-IQ · Smart Off: 2×12MP@30, 2×4K@30, 4×4MP@30, 10×1080P@30, 16×720P@30 | Smart On: 2×4K@30, 4×4MP@30, 8×1080P@30, 16×720P@3032B-IQ · Smart Off: 2×12MP@30, 2×4K@30, 4×4MP@30, 10×1080P@30, 20×720P@30, 32×D1 | Smart On: 2×4K@30, 4×4MP@30, 8×1080P@30, 16×720P@30, 32×D1 |
| Decoding Capability Description | The resolution of each channel cannot exceed 8192 pixels in length and 4096 pixels in width |
| Audio Compression | G.711A, G.711U |
Network
| Incoming Bandwidth | 160 Mbps |
| Outgoing Bandwidth | 128 Mbps |
| Remote Users | 128 |
| Protocols | TCP/IP, P2P, NTP, DHCP, PPPoE, HTTP, HTTPS, DNS, DDNS, SNMP, SMTP, RTSP, IPv6, IPv4, 802.1x, UPnP |
| Browser (Plugin) | IE10, IE11, Chrome 45+, Edge 79+, Firefox 52+ |
Video/Audio Input
| IP Video Input | 16B-IQ · 16-ch32B-IQ · 32-ch |
| RCA Audio Input | 1-ch |
| Peripheral Input — Ip Speaker | 16-ch |
| Peripheral Input — POS | 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 | 16B-IQ · 1/4/6/8/9/1632B-IQ · 1/4/6/8/9/16/25/32 |
| Corridor Mode Screen | 16B-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. D1 (720 × 576) video resolution, with D1 snapshot resolution) |
Recording
| Recording Resolution | 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), SIP, UMD, Traffic Monitoring |
| Smart by NVR | Face Detection, Face Comparison, Smart Intrusion Prevention (SIP), Ultra Motion Detection (UMD) |
| 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 | Up to 8-ch with UNV Face Detection Camera, Up to 1-ch with normal camera (UNV and Third-part brand, 1-ch 2MP) |
| 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 2-ch with normal camera (UNV and Third-part brand, 2-ch 2MP, 1-ch 4MP) |
| UMD 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) |
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) |
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 | N/A |
| RS232 | N/A |
| Alarm In | N/A |
| Alarm Out | N/A |
| Power Supply | DC 12 V / 5 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) | ≤ 12 W |
Dimensions
| Weight (without HDD) | ≤ 3.4 kg (7.5 lb) |
| Dimensions | 440 mm × 350 mm × 48 mm (17.3" × 13.8" × 1.9") |
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 | 440 mm × 350 mm × 48 mm (17.3" × 13.8" × 1.9") |
| Weight (without HDD) | ≤ 3.4 kg (7.5 lb) |
| Power supply | DC 12 V / 5 A |
| Consumption (without HDD) | ≤ 12 W |
Rear panel — all interfaces
16/32-Channel 4-Bay AI NVR FAQ — NVR304-B-IQ Series
How many IP cameras can I connect?
The NVR304-16B-IQ records 16 IP cameras and the 32B-IQ records 32, up to 12 MP per channel. Incoming bandwidth is 160 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.
How many hard drives fit and what is the maximum capacity?
Four independent SATA bays, each taking a disk up to 24 TB — up to 96 TB in one recorder for long retention or high channel counts. Use surveillance-rated hard drives; real retention depends on camera count, resolution and bitrate, and Ultra 265 keeps files smaller than H.264 at the same image quality, stretching every terabyte further.
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 1 with standard cameras, plus SIP on 2 and UMD on 4 standard channels. AcuSearch, AcuTrack and face/vehicle/human-body search make playback filterable.
Can it capture and search vehicle plates?
With UNV cameras that support Vehicle Detection (LPR), the recorder captures and indexes plates and stores up to 5 vehicle picture libraries with 25,000 vehicle pictures in total for comparison — useful for gates and parking projects. Motor and non-motor vehicle search then filters playback fast.
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 128 Mbps.
Does the NVR304-16B-IQ support RAID, and what happens if one disk fails?
RAID is not listed in the official datasheet for the NVR304-B-IQ series: the four bays work as independent disks that add up to as much as 96 TB. If one disk fails, the footage stored on it is lost while the other disks keep recording. Some other recorders with similar names do offer RAID, so if disk redundancy is a requirement, look at the NVR504-16B-IQ / 32B-IQ RAID model and confirm the exact model with us before ordering.
How many days of recording will the NVR304-32B-IQ keep with 32 cameras?
With four 24 TB disks (96 TB) and continuous recording, 32 cameras at 4 Mbps each keep about 69 days, and at 2 Mbps about 139 days. The bandwidth caps the average at 5 Mbps per camera when all 32 are connected, which gives about 55.6 days. Recording only on motion or smart events on quiet cameras stretches this further.
Can I start the NVR304 B-IQ with two disks and add more later?
Yes. Because the four bays are independent, you can start with one or two disks and fill the empty bays later. A new disk has to be initialised (formatted) in the recorder before use; this erases only that new disk, not the footage on the disks already installed. Use 3.5-inch surveillance-grade SATA drives of up to 24 TB each.
NVR304-16B-IQ or NVR302-16B-IQ: what is the real difference?
Mainly storage. Both have 16 channels, 160 Mbps incoming bandwidth, the same decoding (2 × 12 MP or 2 × 4K at Smart Off), the same smart functions and 2 gigabit ports. The NVR304 has 4 bays for up to 96 TB, a DC 12 V / 5 A supply and a 440 mm wide case; the NVR302 has 2 bays for up to 48 TB. Choose the NVR304 when you need more than about 69 days for 16 cameras at 4 Mbps, or want room to add disks later.
Will Hikvision, Dahua or other third-party cameras work with the NVR304 B-IQ smart search?
Only partly. AcuSearch and AcuTrack work on all channels only with Uniview SIP/UMD cameras, and face detection on up to 8 channels needs Uniview face detection cameras. With normal cameras (Uniview or third-party) the recorder itself analyses at most 1 channel for faces (2 MP), 2 channels for SIP and 4 channels for Ultra Motion Detection. ONVIF is not named in the datasheet protocol list, so send us your camera models and we will confirm they can be added.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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