i-PRO S4176A vs i-PRO S4576LA: Specification Comparison
Both the i-PRO WV-S4176A and WV-S4576LA are 12MP AI fisheye cameras sharing the same 1/2-type CMOS sensor, 1.4mm F1.9 lens, 183° horizontal and vertical field of view, and Ambarella CV22 SoC. The fundamental difference is deployment environment: the S4176A is an indoor ceiling/wall unit without IR illumination, while the S4576LA is an outdoor-rated dome with built-in 14m IR LEDs, IP66/IK10 protection, and an extended cold-temperature rating. Buyers choosing between them are weighing indoor simplicity against outdoor durability.
In This Guide
How do the imaging specs compare?
Both cameras share identical optics: 1.4mm focal length, F1.9 maximum aperture, 0.5m–∞ focus range, and a 183°×183° angular field of view from the same approximate 1/2-type 12MP CMOS sensor running on the Ambarella CV22 SoC. Maximum dynamic range is listed at 84 dB for both units at WDR level 31. Color minimum illumination is identical at 0.3 lx for both models. Monochrome minimum illumination diverges: the S4176A is specified at 0.2 lx (B&W) with no IR illuminator, while the S4576LA reaches 0.04 lx (B&W) aided by its built-in IR LED rated to 14m (45 ft) maximum range, enabling effective operation at 0 lux when IR is active.
The S4576LA explicitly lists a 25 fps frame rate; the S4576LA spec does not list observe/recognize/identify DORI breakdown distances beyond the Detect figure of 29.9m / 98.2 ft. The S4176A provides a full DORI table: Detect 29.9m, Observe 12.0m, Recognize 6.0m, Identify 3.0m, with coverage radius at 3m mount height of Detect 56.1m / Observe 20.6m / Recognize 8.4m. The S4576LA's DORI data beyond the Detect distance is not provided in the supplied specifications. The S4176A spec notes a day/night mode listed as electrical (Off/Auto) with no ICR; the S4576LA specifies a true Color/BW ICR cut filter (Off/On/Auto), which is the mechanism enabling the lower 0.04 lx monochrome sensitivity.
What about installation and environment?
The S4176A is rated for indoor use only: operating temperature –10°C to +50°C (14°F to 122°F), humidity 10–90% non-condensing, no IP or IK rating stated in the provided specifications. It measures ø150mm × 49.5mm (H) and weighs approximately 420g, with an ABS resin main body finished in i-PRO white. Fixing angle adjustment is ±5° or 0°. Both PoE IEEE 802.3af and DC 12V 680mA are supported.
The S4576LA is designed for outdoor deployment with IP66 (IEC60529) and NEMA 4X water/dust resistance, IK10 (IEC 62262) impact resistance rated at 50J, and wind resistance up to 40 m/s (~89 mph). Operating temperature extends to –40°C to +50°C with IR on, and –40°C to +60°C with IR off—a dramatically wider cold-side range than the S4176A. Humidity tolerance is 10–100% non-condensing, and an integrated Rosahl anti-condensation element is fitted. The housing is aluminum die cast with a polycarbonate dome. Weight is 880g (with plate) or 1.3kg (with bracket). Power draw is higher at DC 12V 1.1A or PoE IEEE 802.3af. The S4576LA also carries railway certifications EN50155-TX, ECE-R10, and EN50121, which the S4176A does not list.
Which fits your VMS and analytics better?
Both cameras support ONVIF Profiles G, M, S, and T; H.265/H.264 CBR/VBR with unicast/multicast; Smart Coding with GOP control and Auto VIQS; JPEG at 10 quality steps; G.726 ADPCM (16/32 kbps) and G.711 (64 kbps) audio compression; and up to 14 concurrent users. Both carry the same AI analytics suite: AI-VMD, AI People Counting for 360-degree fisheye, AI Privacy Guard for 360-degree fisheye, AI Scene Change Detection, and AI Sound Classification (gunshot, yell, vehicle horn, glass break). Edge storage via microSD, signed firmware, HTTPS encryption, and mobile compatibility (iPad/iPhone, Android) are present on both. Alarm I/O is 3× alarm input and 1× alarm output plus 1× AUX OUT on both units.
One audio distinction exists in the provided specs: the S4176A explicitly lists a built-in nondirectional electret condenser microphone, while the S4576LA lists an audio input (mic/line) but does not specify a built-in microphone in its spec data. Both provide a 3.5mm stereo audio output jack at 600Ω. The S4576LA additionally lists a monitor output (VBS 1.0V composite 3.5mm jack for alignment), which is not listed for the S4176A. Both cameras list the same nine GUI languages and the same digital zoom levels (×1, ×2, ×4). Both carry identical safety certifications: UL62368-1, c-UL CSA C22.2 No.62368-1, CE, and IEC62368-1.
Which should you choose: the S4176A or the S4576LA?
Our take: The S4576LA is the stronger choice when the deployment is outdoors or in harsh environments: it adds 14m IR illumination enabling 0.04 lx monochrome sensitivity versus the S4176A's 0.2 lx with no IR, extends the cold-side operating range from –10°C down to –40°C, and adds IP66/NEMA 4X ingress protection and IK10 50J impact resistance that the indoor S4176A does not carry. Conversely, the S4176A is the appropriate selection for indoor installations where its lighter 420g body, lower power draw (680mA vs 1.1A at 12V), built-in confirmed microphone, and smaller ø150mm × 49.5mm ceiling profile are advantages. Both cameras deliver identical 12MP fisheye resolution, the same 183° FOV, the same AI analytics suite, the same ONVIF G/M/S/T profiles, and a matching 5-year warranty, so the decision is driven entirely by environment and IR requirement rather than analytics or integration capability.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | i-PRO S4176A | i-PRO S4576LA |
|---|---|---|
| Resolution | 12MP | 12MP |
| Image Sensor | Approx. 1/2 type 12MP CMOS | Approx. 1/2 type 12MP CMOS |
| Lens / Focal Length | 1.4mm fisheye, F1.9 | 1.4mm fisheye, F1.9 |
| Field of View | 183° H × 183° V | 183° H × 183° V |
| Min. Illumination (Color) | 0.3 lx | 0.3 lx |
| Min. Illumination (B&W) | 0.2 lx (no IR) | 0.04 lx (with IR) |
| IR Range | — | 14m (45 ft) max |
| Day/Night | Electronic (Off/Auto) | ICR cut filter (Off/On/Auto) |
| Dynamic Range (WDR) | Max. 84 dB | Max. 84 dB |
| Video Compression | H.265, H.264, JPEG | H.265, H.264, JPEG |
| IP / Ingress Rating | — | IP66, NEMA 4X |
| IK / Impact Rating | — | IK10 (50J, IEC 60068-2-75) |
| Operating Temperature | –10°C to +50°C | –40°C to +50°C (IR on) / –40°C to +60°C (IR off) |
| Power Input / PoE Class | DC 12V 680mA or PoE 802.3af (Class 0) | DC 12V 1.1A or PoE 802.3af (Class 0) |
| Built-in Microphone | Yes (nondirectional electret condenser) | Not specified in provided specs |
| Edge Storage | microSD | microSD |
| ONVIF Profiles | G, M, S, T | G, M, S, T |
| Weight | Approx. 420g | 880g (plate) / 1.3kg (bracket) |
| Environment Rating | Indoor | Outdoor |
| Warranty | 5-Year | 5-Year |
Frequently Asked Questions
Which should you choose: the S4176A or the S4576LA?
The S4576LA is the stronger choice when the deployment is outdoors or in harsh environments: it adds 14m IR illumination enabling 0.04 lx monochrome sensitivity versus the S4176A's 0.2 lx with no IR, extends the cold-side operating range from –10°C down to –40°C, and adds IP66/NEMA 4X ingress protection and IK10 50J impact resistance that the indoor S4176A does not carry. Conversely, the S4176A is the appropriate selection for indoor installations where its lighter 420g body, lower power draw (680mA vs 1.1A at 12V), built-in confirmed microphone, and smaller ø150mm × 49.5mm ceiling profile are advantages. Both cameras deliver identical 12MP fisheye resolution, the same 183° FOV, the same AI analytics suite, the same ONVIF G/M/S/T profiles, and a matching 5-year warranty, so the decision is driven entirely by environment and IR requirement rather than analytics or integration capability.
Is the S4176A or S4576LA better for low-light performance?
The S4576LA is substantially better in low light. Its built-in IR LEDs (14m range) allow monochrome operation at 0.04 lx versus the S4176A's 0.2 lx (B&W) with no IR illumination. The S4576LA also uses a true ICR cut filter for color-to-mono switching, whereas the S4176A uses electronic day/night only.
Can the S4176A be used outdoors?
Based on the provided specifications, no. The S4176A carries no IP or IK environmental rating and is specified for indoor use with a –10°C lower temperature limit and 90% maximum humidity. The S4576LA is the outdoor-rated model, carrying IP66, NEMA 4X, IK10, and a –40°C lower operating temperature.
Do both cameras support the same AI analytics and VMS integration?
Yes. Both models run the same AI analytics—AI-VMD, AI People Counting for 360° fisheye, AI Privacy Guard for 360° fisheye, AI Scene Change Detection, and AI Sound Classification (gunshot, yell, vehicle horn, glass break)—on the same Ambarella CV22 SoC. Both support ONVIF Profiles G, M, S, and T, H.265/H.264, microSD edge storage, and up to 14 concurrent users.
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