UniviewB Series · 1× SATA HDD

1-HDD Network Video Recorder · B Series

NVR501-04 / 08 / 16B

Name: Uniview NVR501-04 / 08 / 16B
Brand: Uniview

4 / 8 / 16-channel network video recorder — Ultra 265 compression, 4K HDMI output, records cameras up to 16MP, with built-in face detection.

16MP · max recordingUltra 265 · low storage4K HDMI · + VGA simultaneous1× SATA · up to 24 TBFace 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 shop with 3 cameras runs happily on the 04B; pick the 08B or 16B if you may add cameras later. Highlighted rows in the spec table below show every difference between the three.

Get Best Price on WhatsApp Need the PDF datasheet? Get it on WhatsApp →

In-stock models: 3 days to your designated warehouse after payment · Out-of-stock or insufficient stock: 7–15 working days

Sample quantities are welcome — testing one or two units first is the normal way to start.

Certified:CEFCCULRoHSWEEEONVIFNDAA

Corporate orders are registered with the manufacturer under your company name — genuine supply you can verify at the source.

4/8/16Channel options

80 MbpsIncoming bandwidth

24 TBMax HDD capacity

4KHDMI output

Is this the right recorder for you?

Plain-language guide for buyers and installers — based only on what this recorder actually does.

Small shops & homesThe 4-ch 04B plus four cameras is a complete kit — one disk, one screen, done.

Growing businessesBuy channels you don't use yet: the 08B/16B lets you add cameras later without replacing the recorder.

Remote viewing on phoneP2P protocol built in — the owner checks the shop from a phone app without a fixed IP or network skills.

AI-assisted monitoringBuilt-in Face Detection, Intrusion Detection (SIP) and Ultra Motion Detection (UMD) — 4 channels on the 04B, 8 on the 08B/16B — flag real events instead of hours of empty footage.

Fast backup via USB 3.0The rear panel pairs one USB 3.0 port with one USB 2.0 port — pulling recorded footage onto a drive is faster than on a USB 2.0-only recorder.

Keeps recording through network dropsANR technology lets the camera buffer footage locally and the NVR fills the gap once the network reconnects — fewer blind spots during outages.

Not the right pick if you need…

PoE ports — cameras need a separate PoE switch (we bundle one at combo price)
A second hard disk or RAID — this series has a single SATA bay
Gigabit uplink — the network port is 10/100M (fine for 16 cameras at 80 Mbps total)
RS485/RS232 serial control for PTZ or other external devices — neither port is present
Physical alarm in/out wiring for sirens or sensors

Worried about counterfeits? Order under your own company name.

For corporate buyers: we support submitting the purchase order to Uniview under your company's real name — your company appears on the official order, so the origin of the goods can be verified directly with the manufacturer. Just provide your company name and pay by corporate bank transfer. Models carrying the anti-counterfeit label can also be self-verified on Uniview's official Anti-Counterfeiting Query page — enter the unit's SN plus the scratch-off code.

1 · Company name2 · Corporate bank payment3 · Order registered in your name4 · Verify SN on Uniview's site

Using your own freight forwarder? No problem.

For small and mid-size orders, we deliver directly to your designated forwarder's warehouse in China (EXW / FOB Guangzhou). From hand-over onward, international shipping and destination-side arrangements are handled by your forwarder — the way you already work.

EXW / FOB GuangzhouDelivery to your forwarder's warehouseNo minimum order

Note: manufacturer order registration (left) is available via the corporate purchase channel.

How to get a better price

Volume Discount50+ units of a single model

Mix & Match DiscountMix any categories & models storewide in one order — no quantity limit

BETTER

End-User Project PriceEnd user with a real project? Send your requirements / BOQ — best price, plus professional system design & planning advice

BEST

All discounts are quoted personally — message me on WhatsApp ↑

Saves your disk. Spots the real events.

Two real capabilities from the datasheet that matter every day: storage efficiency and built-in smart detection.

ULTRA 265

Half the storage, same image

Ultra 265 compression cuts recording size dramatically versus H.264 — on the same 24 TB disk you keep footage for weeks longer, or record more cameras at higher resolution.

SMART BY IPC

Real alerts, not hours of nothing

Built-in Face Detection, Intrusion Detection (SIP) and Ultra Motion Detection (UMD) run on up to 8 channels (4 on the 04B), feeding Face Snapshot Search, Motor/Non-Motor Vehicle Search, Human Body Search and People Counting Report - search by event, not by scrubbing the timeline.

Full Specifications

Complete official specifications from the manufacturer's datasheet (technical values in English).

Highlighted rows differ between the three models:NVR501-04B · 4-chNVR501-08B · 8-chNVR501-16B · 16-ch

Decoding

Decoding Format	Ultra 265, H.265, H.264
Decoding Capability	04B · Ultra 265/H.265: 2×16MP@30, 2×12MP@30, 4×4K@30 \| H.264: 2×16MP(4800×2688)@30, 2×12MP@30, 2×4K@30, 4×5MP@3008B · Ultra 265/H.265: 2×16MP@30, 2×12MP@30, 4×4K@30, 6×5MP@30, 8×4MP@30 \| H.264: 2×16MP(4800×2688)@30, 2×12MP@30, 2×4K@30, 4×5MP@30, 6×4MP@30, 8×3MP@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@30
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	80 Mbps
Outgoing Bandwidth	64 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	04B · 4-ch08B · 8-ch16B · 16-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	04B · 1/408B · 1/4/6/8/916B · 1/4/6/8/9/16
Corridor Mode Screen	04B · 3/408B · 3/4/5/7/916B · 3/4/5/7/9/10/12/16
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	04B · 4-ch08B · 8-ch16B · 16-ch

Smart

Smart by IPC	04B · Total 4-ch (Face Detection, SIP, UMD)08B · Total 8-ch (Face Detection, SIP, UMD)16B · Total 8-ch (Face Detection, SIP, UMD)
VCA Search	Face Snapshot Search, Motor Vehicle Search, Non-Motor Vehicle Search, Human Body Search, General Search, People Counting Report

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

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	1 SATA Interface
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	1 RJ45 10 M/100 M self-adaptive Ethernet Interface
USB	Rear panel: 1 × USB 2.0, 1 × USB 3.0
RS485	N/A
RS232	N/A
Alarm In	N/A
Alarm Out	N/A
Power Supply	DC 12 V / 2 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)	≤ 6 W

Dimensions

Weight (without HDD)	≤ 0.98 kg (2.16 lb)
Dimensions	260 mm × 222 mm × 47 mm (10.2" × 8.7" × 1.8")

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

NVR501-04 / 08 / 16B

Is this the right recorder for you?

Worried about counterfeits? Order under your own company name.

Using your own freight forwarder? No problem.

Key Features

Saves your disk. Spots the real events.

Half the storage, same image

Real alerts, not hours of nothing

Which size fits your project?

Full Specifications

Decoding

Network

Video/Audio Input

Video/Audio Output

Recording

Smart

Alarm

GUI Language

Hard Disk

External Interface

Working Environment

Dimensions

Certification

Dimensions

Optional Mounting Accessories

Related Solutions & Products

Dimensions	260 × 222 × 47 mm (10.2" × 8.7" × 1.8")
Weight (without HDD)	≤ 0.98 kg (2.16 lb)
Power supply	DC 12 V / 2 A
Consumption (without HDD)	≤ 6 W