i-PRO NX400/27000T3 vs i-PRO WJND400/4000T4: Specification Comparison
Both the i-PRO WJ-NX400/27000T3 and the i-PRO WJND400/4000T4 are rack-mount, 64-channel network video recorders from i-PRO targeting large-scale deployments. While they share the same channel count and vendor, they represent different generations and capability tiers. This comparison examines storage and recording performance, video compression and resolution, and integration and interface specifications to help installers and IT buyers determine which unit fits their infrastructure requirements.
In This Guide
- Which NVR delivers more recording capacity and higher-resolution throughput?
- How do the two NVRs compare on video compression efficiency and maximum recorded resolution?
- Which unit offers broader integration, alarm I/O, and interface compatibility with third-party systems?
- Which should you choose: the NX400/27000T3 or the WJND400/4000T4?
- Side-by-Side Specs
- FAQ
Which NVR delivers more recording capacity and higher-resolution throughput?
The WJ-NX400/27000T3 ships with 27TB of pre-installed HDD storage, configured as 3TB × 9 drives, and supports RAID 0, 1, 5, 6, and 10 for redundancy and performance tuning. It records all 64 channels at up to 4K (3840×2160) resolution and 60 fps per camera, with a stated throughput of 3 Mbps. The unit also provides a microSD slot for local edge storage.
The WJND400/4000T4 spec sheet does not disclose an installed storage capacity, RAID support, or per-camera frame rate ceiling. Its maximum interface speed is listed at 10 Mbps, but whether this figure represents recording bandwidth, client streaming throughput, or control port speed is ambiguous given the spec context (bandwidth options listed reference a client control port ranging from 32 kbps to 10 Mbps). No storage volume or drive configuration data is present in the provided specifications.
For deployments that require defined, quantified storage capacity and documented RAID resilience, the NX400/27000T3 provides actionable numbers. The WJND400/4000T4 cannot be evaluated on the same axes from the available data.
How do the two NVRs compare on video compression efficiency and maximum recorded resolution?
The WJ-NX400/27000T3 supports H.265, H.264, and JPEG compression. H.265 is the current-generation codec; the product's bullet points state it cuts bitrate 40–60% relative to H.264, though that figure is stated on the product card and not independently verified here. Maximum recorded resolution is 4K (3840×2160).
The WJND400/4000T4 specifies H.264 compression only. Its resolution field lists 280×960, which is anomalous for a 64-channel NVR and likely reflects a display or sub-stream parameter rather than a maximum recording resolution — the spec as provided does not clarify. No H.265 support is documented for this unit.
On codec generation alone, the NX400/27000T3 is the newer platform. Absence of H.265 on the WJND400/4000T4 means higher per-stream storage and bandwidth consumption at equivalent quality. The 280×960 resolution figure on Product B cannot be used as a meaningful recording-resolution comparison given its ambiguity.
Which unit offers broader integration, alarm I/O, and interface compatibility with third-party systems?
The WJ-NX400/27000T3 is documented as ONVIF Profile S compliant, enabling integration with third-party IP cameras beyond i-PRO's own line. It provides 32 alarm inputs, 4 alarm reset inputs, and alarm output support. PTZ camera control covers pan, tilt, zoom, focus, brightness, and up to 256 preset positions. Audio support includes G.711 and G.726 ADPCM at 32 kbps, with a −10 dBv RCA analog output. Video output is via HDMI. Power is 12V DC.
The WJND400/4000T4 provides a D-sub25pin interface for PTZ and dome control, emergency recording input, and power-outage detection input. Bandwidth control per client port is configurable from 32 kbps to 10 Mbps or unlimited. Operating temperature is specified as +5°C to +45°C. Camera grouping supports 8 groups of 16-character titles. No ONVIF compliance, alarm input count, audio codec, or network video output interface is listed in the provided specifications.
The NX400/27000T3 offers a more completely documented integration profile. ONVIF Profile S compliance is explicit, alarm I/O is quantified, and audio codec support is named. The WJND400/4000T4's D-sub25pin legacy PTZ interface may be an asset in sites with installed analog PTZ infrastructure, but its integration scope cannot be fully assessed from the available spec data.
Which should you choose: the NX400/27000T3 or the WJND400/4000T4?
Our take: The NX400/27000T3 is the stronger choice when a deployment requires documented 4K/60 fps recording across all 64 channels, defined on-board storage, and current-generation codec efficiency. Concretely: it ships with 27TB pre-installed (versus no disclosed storage on the WJND400/4000T4), records at 4K (3840×2160) versus an ambiguous 280×960 resolution figure on the WJND400/4000T4, and supports H.265 in addition to H.264 where the WJND400/4000T4 lists H.264 only. The WJND400/4000T4's D-sub25pin PTZ interface is a documented advantage for legacy analog-PTZ environments, and its operating temperature range is explicitly stated at +5°C to +45°C — data absent for the NX400/27000T3. For greenfield or modernization projects where storage sizing, 4K resolution, and ONVIF interoperability are primary criteria, the NX400/27000T3 is the better-specified option. The WJND400/4000T4 should only be shortlisted where legacy interface compatibility is required and its missing specs can be confirmed with i-PRO directly.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | i-PRO NX400/27000T3 | i-PRO WJND400/4000T4 |
|---|---|---|
| Camera Channels | 64 | 64 |
| Max Recording Resolution | 4K (3840×2160) | 280×960 (spec ambiguous) |
| Max FPS per Camera | 60 fps | — |
| Video Compression | H.265; H.264; JPEG | H.264 |
| Pre-installed Storage | 27TB (3TB × 9 HDD) | — |
| RAID Support | RAID 0, 1, 5, 6, 10 | — |
| Local Edge Storage | microSD | — |
| ONVIF Compliance | ONVIF Profile S | — |
| Alarm Inputs | 1–32 | — |
| Alarm Reset Inputs | 1–4 | — |
| PTZ Control Interface | Pan/Tilt/Zoom/Focus/Brightness; 256 presets | D-sub25pin |
| Audio Support | G.711; G.726 ADPCM 32 kbps; −10 dBv RCA out | — |
| Video Output Interface | HDMI | — |
| Client Bandwidth Control | — | 32 kbps – 10 Mbps (or unlimited) |
| Operating Temperature | — | +5°C to +45°C (41°F to 113°F) |
| Form Factor | Embedded NVR (rack-mount) | Rack-mount NVR |
| Power | 12V DC | — |
| Housing Color | White | — |
| Unit Weight | — | 29.76 (units not specified in source data) |
Frequently Asked Questions
Which should you choose: the NX400/27000T3 or the WJND400/4000T4?
The NX400/27000T3 is the stronger choice when a deployment requires documented 4K/60 fps recording across all 64 channels, defined on-board storage, and current-generation codec efficiency. Concretely: it ships with 27TB pre-installed (versus no disclosed storage on the WJND400/4000T4), records at 4K (3840×2160) versus an ambiguous 280×960 resolution figure on the WJND400/4000T4, and supports H.265 in addition to H.264 where the WJND400/4000T4 lists H.264 only. The WJND400/4000T4's D-sub25pin PTZ interface is a documented advantage for legacy analog-PTZ environments, and its operating temperature range is explicitly stated at +5°C to +45°C — data absent for the NX400/27000T3. For greenfield or modernization projects where storage sizing, 4K resolution, and ONVIF interoperability are primary criteria, the NX400/27000T3 is the better-specified option. The WJND400/4000T4 should only be shortlisted where legacy interface compatibility is required and its missing specs can be confirmed with i-PRO directly.
Is the WJ-NX400/27000T3 or the WJND400/4000T4 better for larger deployments that need high-resolution recording?
Based on the provided specifications, the WJ-NX400/27000T3 is the better-documented choice for high-resolution recording: it specifies 4K (3840×2160) at up to 60 fps per camera across all 64 channels and ships with 27TB of pre-installed storage with RAID options. The WJND400/4000T4 does not disclose a maximum recording resolution (the listed 280×960 figure is ambiguous), storage capacity, or RAID support in the available specs.
Does either NVR support H.265 compression to reduce storage and bandwidth consumption?
Yes — the WJ-NX400/27000T3 supports H.265 (as well as H.264 and JPEG). The WJND400/4000T4 lists H.264 only; no H.265 support is documented in its specifications. Sites recording at high resolution across 64 channels will consume significantly more storage and bandwidth with an H.264-only recorder.
Can either unit integrate with third-party cameras from brands other than i-PRO?
The WJ-NX400/27000T3 explicitly states ONVIF Profile S compliance, which enables integration with ONVIF-conformant cameras from third-party manufacturers. The WJND400/4000T4's provided specifications do not mention ONVIF compliance. Buyers who need to mix camera brands should confirm ONVIF support directly with i-PRO before selecting the WJND400/4000T4.
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