NVR / Recorders › NVR-104S3-P4 / 108S3-P8
UniarchS3-P Series · Built-in PoE
1-HDD PoE Network Video Recorder · S3-P Series
NVR-104 / 108S3-P
4 / 8-channel PoE network video recorder — built-in PoE ports power your cameras directly, Ultra 265 compression, records cameras up to 6MP, works with third-party ONVIF cameras.
6MP · max recordingUltra 265 · low storage4/8 PoE ports · built-in, powers camerasHDMI + VGA · simultaneous, up to 1080p1× SATA · up to 6 TBONVIF · S / G / T profiles
Choose your size — two models on this page
Rule of thumb: count your cameras, then leave room to grow — a shop with 3 cameras runs happily on the 104S3-P4; pick the 108S3-P8 if you may add cameras later. Both models power compliant PoE cameras directly from the built-in ports. Highlighted rows in the spec table below show every difference between the two.
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The Uniarch S3-P Series is a 1-HDD PoE network video recorder offered in two sizes: NVR-104S3-P4 (4-ch) and NVR-108S3-P8 (8-ch). Both models have built-in PoE network interfaces (IEEE 802.3af/at) that power compliant IP cameras directly over the same cable, record cameras up to 6MP with Ultra 265 / H.265 / H.264 compression, and output simultaneously over HDMI and VGA at up to 1920×1080. Third-party cameras are supported via ONVIF (Profile S, G, T); one SATA bay takes a hard disk up to 6 TB, and the local interface is available in 21 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 shops & homesThe 4-ch 104S3-P4 plus four PoE cameras is a complete starter kit — one cable per camera, one disk, one screen, done.
Growing businessesBuy channels you don't use yet: the 108S3-P8 doubles the PoE ports so you can add cameras later without buying a separate switch.
No extra PoE switch to buyBuilt-in 4 or 8-port PoE (IEEE 802.3af/at, up to 30 W per port) powers compliant cameras directly over the same network cable — plug and play.
Remote viewing on phoneP2P protocol built in — the owner checks the shop from a phone app without a fixed IP or network skills.
Local-language interface21 GUI languages including Spanish (Latin America), Portuguese (Brazil) and French — your customer operates it in their own language.
Mixed-brand projectsONVIF Profile S/G/T means existing third-party IP cameras keep working — note that the built-in PoE ports only power 802.3af/at-compliant cameras; other cameras still need their own power.
Not the right pick if you need…
- 4K/UHD monitor output — HDMI and VGA top out at 1920×1080 on this series
- A second hard disk or RAID — this series has a single SATA bay
- Gigabit uplink — the network and PoE ports are 10/100M (fine for up to 8 cameras at 64 Mbps total)
- Alarm in/out wiring for sirens or sensors
- Audio input — it has a 3.5mm audio output only (camera-side mics still record)
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Key Features
Complete list from the official datasheet.
Support Ultra 265/H.265/H.264 video formats
4/8-channel input
Plug & Play with 4/8 independent PoE network interfaces
Third-party IP cameras supported with ONVIF conformance: Profile S, Profile G, Profile T
Support 1-ch HDMI, 1-ch VGA
HDMI and VGA simultaneous output
Up to 6MP resolution recording
1 SATA HDD up to 6TB
Support cloud upgrade
Powers your cameras. Plays with any camera.
The two capabilities that decide whether a PoE NVR feels cheap or smart.
BUILT-IN POE
No separate PoE switch to buy
4 or 8 built-in PoE ports (IEEE 802.3af/at, up to 30 W per port) power compliant cameras directly over the same network cable — one cable per camera, no injector, no switch.
ONVIF S · G · T
Third-party cameras welcome
Full ONVIF conformance (Profile S, G, T) means existing IP cameras on site keep working — upgrade the recorder today, replace cameras on your own schedule.
Which size fits your project?
Bars show camera capacity per model — both power cameras directly over their built-in PoE ports. Click the model buttons above to switch — the spec table highlights every other difference.
NVR-104S3-P4live view split 1/4 · sync playback 4-ch · 4 PoE ports
4cameras
NVR-108S3-P8live view split up to 1/4/6/8/9 · sync playback 8-ch · 8 PoE ports
8cameras
Who uses it, where it goes and how to set it up
Written for the Uniarch NVR-104S3-P4 and NVR-108S3-P8 from the official datasheet: 4 or 8 channels with 4 or 8 built-in PoE ports, 64 Mbps incoming bandwidth, recording up to 6 MP, 1 SATA bay up to 6 TB, HDMI and VGA up to 1920×1080.
Who it is for
- Small shops, offices and homes (104S3-P4) — Up to 4 cameras, each powered over its own cable from the recorder, so no PoE switch and no adapter at the camera. The 50 W PoE budget covers four typical IR cameras with plenty to spare.
- Restaurants, clinics and small warehouses (108S3-P8) — 8 channels and 8 PoE ports with a 75 W budget, live view split up to 9 screens and 8-channel synchronous playback, so one monitor shows the whole site and you can add cameras later without another switch.
- Installers selling ready-made kits — Plug and play on the PoE ports, a compact 190 × 195 × 42 mm case, and a 21-language interface including Spanish (Latin America), Portuguese (Brazil) and French for handover to the end user.
- Not the right pick for — 4K cameras or a 4K monitor (recording stops at 6 MP, outputs at 1920×1080), a second disk or RAID, alarm in/out wiring, or a gigabit network port (all ports are 10/100 Mbps).
Where and how to install the recorder
- Put it where the cables meet — Place the NVR near the centre of the camera layout so every PoE cable stays under 100 m of Cat5e or Cat6 copper. A camera farther away needs a PoE extender or a small PoE switch closer to it.
- Desk, shelf or locked cabinet — The case is 190 × 195 × 42 mm and weighs no more than 1.0 kg without disk, so it fits on a shelf or in a small wall cabinet. Lock it away: a thief who takes the recorder takes the footage too.
- Heat and ventilation — Working range is -10 °C to 55 °C at ≤ 90% RH non-condensing. Leave air space around the case, do not stack a router or other hot equipment on top, and avoid a closed box in direct sun; the disk is the part that suffers first from heat.
- Power adapter and UPS — The external adapter is DC 48 V / 1.35 A (104S3-P4) or DC 52 V / 1.8 A (108S3-P8) and it also powers every PoE camera. Put it on a small UPS so a power cut does not stop recording, reboot all cameras at once or damage the disk.
- Disk first, then outdoor cables — Fit one SATA surveillance-grade drive (rated for 24/7 writing) of up to 6 TB before mounting the unit. For cameras on poles or outside walls, add an Ethernet surge protector and earth it, so lightning surges do not travel back into the PoE ports.
Planning table: 104S3-P4 or 108S3-P8
Both models share the same 64 Mbps incoming bandwidth, the same single 6 TB bay and the same 30 W per-port PoE limit. The 108S3-P8 doubles the channels and PoE ports and raises the PoE budget from 50 W to 75 W, so with 8 cameras the same disk holds half as many days.
| NVR-104S3-P4 | NVR-108S3-P8 | |
|---|---|---|
| IP channels / built-in PoE ports | 4 / 4 | 8 / 8 |
| Incoming bandwidth (all cameras together) | 64 Mbps | 64 Mbps |
| Max recording resolution | 6 MP | 6 MP |
| HDD bays × max capacity | 1 × 6 TB | 1 × 6 TB |
| PoE budget / per-port max | 50 W / 30 W | 75 W / 30 W |
| PoE load with every port on a 6 W IR camera (used / total) | 24 W / 50 W | 48 W / 75 W |
| Decoding (live view / playback) | 2×6MP@30, 4×5MP@25, 4×4MP@25, 4×1080P@30 | 2×6MP@30, 4×5MP@25, 4×4MP@25, 6×1080P@30, 8×720P@30 |
| Live view split / sync playback | 1/4 · 4-ch | 1/4/6/8/9 · 8-ch |
| Remote users / outgoing bandwidth | 128 / 48 Mbps | 128 / 48 Mbps |
| Retention on 6 TB, all channels at 2 Mbps (days) | ≈ 69.4 | ≈ 34.7 |
| Retention on 6 TB, all channels at 4 Mbps (days) | ≈ 34.7 | ≈ 17.4 |
- Pick the 104S3-P4 when the site will never need more than 4 cameras: four 4 MP cameras at 4 Mbps keep about 34.7 days on a 6 TB disk.
- Pick the 108S3-P8 for 5 to 8 cameras, for later expansion, or when you need more PoE power (75 W instead of 50 W).
- Need 30 days with 8 cameras on the 108S3-P8? A 6 TB disk only gets there at about 2 Mbps per camera, so use Ultra 265 and motion or event recording on quiet cameras.
Retention = disk TB × 10^12 ÷ (cameras × bitrate ÷ 8 × 86400 s), continuous recording, no overwrite reserve. 2 Mbps and 4 Mbps are assumed averages for 2 MP and 4 MP cameras in H.265 or Ultra 265; 6 W per camera is an assumed typical IR camera draw. All other values are from the official datasheet.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the two models:NVR-104S3-P4 · 4-chNVR-108S3-P8 · 8-ch
Decoding
| Decoding Format | Ultra 265, H.265, H.264 |
| Decoding Capability | 104S3-P4 · 2 x 6MP@30, 4 x 5MP@25, 4 x 4MP@25, 4 x 3MP@25, 4 x 1080P@30108S3-P8 · 2 x 6MP@30, 4 x 5MP@25, 4 x 4MP@25, 4 x 3MP@25, 6 x 1080P@30, 8 x 720P@30 |
| Decoding Capability Description | The resolution of each channel cannot exceed 4000 pixels in length and 3000 pixels in width |
| Audio Compression | G.711A, G.711U |
Network
| Incoming Bandwidth | 64 Mbps |
| Outgoing Bandwidth | 48 Mbps |
| Remote Users | 128 |
| Protocols | TCP/IP, P2P, UPnP, DHCP, HTTP, HTTPS, DNS, DDNS, SMTP, RTSP, IPv4 |
| Browser (Plugin) | IE10, IE11, Chrome 45+, Edge 79+, Firefox 52+ |
Video / Audio I/O
| IP Video Input | 104S3-P4 · 4-ch108S3-P8 · 8-ch |
| HDMI 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 |
| 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 |
| 3.5mm Audio Output | 1-ch |
| Liveview Display | 104S3-P4 · 1/4108S3-P8 · 1/4/6/8/9 |
| Corridor Mode Screen | 104S3-P4 · 3/4108S3-P8 · 3/4/5/7/9 |
Recording
| Recording Resolution | 6 MP / 5 MP / 4 MP / 3 MP / 1080P / 960P / 720P / D1 / 2CIF / CIF |
| Synchronous Playback (Local) | 104S3-P4 · 4-ch108S3-P8 · 8-ch |
Smart Features
| VCA Detection by IPC | SIP (Intrusion Detection, Cross Line Detection, Enter Area, Leave Area), Ultra Motion Detection (UMD) |
| VCA Search | Behavior Search |
| Smart by IPC | Total 4-ch (SIP supports channel 1-4, Alarm only, no image) |
Local Interface
| GUI Language | 21 languages: Chinese, English, Vietnamese, Thai, Turkish, Spanish (Latin America), Portuguese (Brazil), Spanish, Portuguese, French, German, Italian, Dutch, Polish, Czech, Hungarian, Slovak, Russian, Hebrew, Arabic, Ukrainian |
Hard Disk
| SATA | 1 SATA Interface |
| Capacity | Up to 6 TB for each HDD |
External Interface
| Network Interface | 1 × RJ45 10 M/100 M self-adaptive Ethernet |
| USB | Rear panel: 2 × USB 2.0 |
| Power Supply | 104S3-P4 · DC 48 V / 1.35 A108S3-P8 · DC 52 V / 1.8 A |
PoE
| PoE Interface | 104S3-P4 · 4 × RJ45 10 M/100 M self-adaptive Ethernet108S3-P8 · 8 × RJ45 10 M/100 M self-adaptive Ethernet |
| Max Power | 104S3-P4 · Max 30 W for single port, Max 50 W in total108S3-P8 · Max 30 W for single port, Max 75 W in total |
| Supported Standard | IEEE 802.3at, IEEE 802.3af |
General
| Working Temperature | -10 °C to 55 °C (14 °F to 131 °F) |
| Working Humidity | ≤ 90% RH (non-condensing) |
| Power Consumption (without HDD) | ≤ 9 W |
| Weight (without HDD) | ≤ 1.0 kg (2.20 lb) |
| Dimensions | 190 mm × 195 mm × 42 mm (7.5" × 7.7" × 1.6") |
Certification
| Certification | CE; FCC; 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 | 190 × 195 × 42 mm (7.5" × 7.7" × 1.6") |
| Weight (without HDD) | ≤ 1.0 kg (2.20 lb) |
| Power supply | 104S3-P4: DC 48 V / 1.35 A · 108S3-P8: DC 52 V / 1.8 A |
| Consumption (without HDD) | ≤ 9 W |
Rear panel — all interfaces (top: NVR-104S3-P4 · bottom: NVR-108S3-P8)
4/8 Channel PoE NVR FAQ — NVR-104S3-P4/108S3-P8
How many cameras can I run on the built-in PoE?
The NVR-104S3-P4 powers 4 cameras from 4 PoE ports with a 50W total budget; the NVR-108S3-P8 powers 8 cameras with 75W total. Each port supplies up to 30W (IEEE 802.3af/at), so standard fixed IP cameras run comfortably and one higher-draw camera per site is still fine.
What resolution can it record?
Recording resolution goes up to 6MP per channel (6MP/5MP/4MP/3MP/1080P and below). Decoding capability covers 2×6MP@30 or 4×5MP@25 for local display, and the HDMI and VGA outputs both reach 1920×1080 at 60 Hz. Incoming bandwidth is 64 Mbps across all channels.
How many hard drives and what maximum capacity?
One SATA bay taking a surveillance hard drive up to 6 TB. Ultra 265 compression cuts recording size dramatically versus H.264, so that 6 TB disk keeps footage for weeks longer — useful where retention requirements are long but the budget only covers one disk.
Will my existing third-party cameras work with it?
Yes — full ONVIF conformance (Profile S, G and T) means existing IP cameras on site keep working. You can upgrade the recorder today and replace cameras on your own schedule. The 21-language GUI includes Latin American Spanish and Brazilian Portuguese for local operators.
How is the recorder itself powered and how much space does it need?
The 104S3-P4 uses a DC 48V/1.35A supply and the 108S3-P8 a DC 52V/1.8A supply, which also feeds the PoE ports. The unit draws under 9W without HDD, measures a compact 190×195×42 mm, weighs under 1 kg and works from -10 to 55 °C.
Can I view it remotely?
Yes. P2P, DDNS, HTTP/HTTPS and RTSP are supported, up to 128 remote users can connect, and outgoing bandwidth is 48 Mbps for remote streams. Browser access works with Chrome 45+, Edge 79+, Firefox 52+ and IE10/11 via plugin.
Can I connect 4K (8 MP) cameras to the NVR-108S3-P8, and how many 4 MP cameras does it really handle?
Plan on no 4K: the datasheet lists recording up to 6 MP, so 8 MP cameras are outside the supported range; for 4K choose a recorder that lists 8 MP. Eight 4 MP cameras are fine: at 8 Mbps each they use exactly the 64 Mbps incoming bandwidth, and at a typical 4 Mbps only half of it. Live view decodes 4 × 4MP@25 at full resolution, so in a 9-split view the other cameras are shown from their sub-stream.
Do intrusion and line-crossing alerts work on all 8 channels of the NVR-108S3-P8?
No. The datasheet limits smart events from the camera to 4 channels in total, on channels 1 to 4, as alarms only without image. Connect the cameras that guard gates, doors or fences to ports 1 to 4 and use plain motion recording on the others. The smart detection itself runs in the camera, so it must be a camera that supports intrusion or line crossing; with ONVIF third-party cameras expect video and basic motion only, and ask us before relying on smart alerts.
Can I add Uniarch Uho Wi-Fi cameras to the NVR-104S3-P4 or NVR-108S3-P8?
Not as plug and play. The recorder has no Wi-Fi, and the NVR datasheet does not list Uho cameras as supported devices; Uho cameras are built for the phone app with their own microSD card. A Wi-Fi camera could only reach the NVR through your router and the 10/100 Mbps network port, never through the PoE ports, and still uses one of the 4 or 8 channels. Send us the exact Uho model first and we will confirm whether it can be added and what will work; for steady 24/7 recording a PoE camera on the built-in ports is the safer choice.
Can one port of the NVR-104S3-P4 power a small PTZ, and what happens if the cameras need more than 50 W?
Yes, if the device needs 30 W or less: each port supports IEEE 802.3af/at with a 30 W maximum. The total is the real limit, 50 W on the 104S3-P4 and 75 W on the 108S3-P8, so one 25 W PTZ plus three 6 W cameras (43 W) fits on the 104S3-P4, but two 25 W PTZs plus two 6 W cameras (62 W) does not. Keep the total under the budget with some margin, because cameras draw more at night with IR on. Devices that need 802.3bt or 24 V AC must have their own power supply.
Which hard disk should I fit in the NVR-108S3-P8 and how many days will 8 cameras keep?
Use one SATA surveillance-grade drive (made for 24/7 writing) of up to 6 TB, the largest size the datasheet lists. With 8 cameras recording continuously, 6 TB keeps about 34.7 days at 2 Mbps per camera or 17.4 days at 4 Mbps (typical 4 MP in H.265). Smaller drives scale down in proportion, so a 2 TB disk at 4 Mbps keeps about a third of that. If you need longer, lower the bitrate, switch on Ultra 265, or record quiet cameras on motion only.
What is the difference between the NVR-108S3-P8 and the NVR-108S3-P8-ECO?
The main difference is PoE power. This model gives 50 W (104S3-P4) or 75 W (108S3-P8) in total, the ECO versions only 30 W and 45 W, with smaller adapters to match. Channels, 64 Mbps bandwidth, 6 MP recording, decoding and the single 6 TB bay are the same in both datasheets. Pick this non-ECO model if you plan PTZs, cameras with strong IR or warm light, or simply want headroom on every port.
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