i-PRO S4176A vs i-PRO S4576LMA: Specification Comparison
Both the i-PRO WV-S4176A and WV-S4576LMA are 12MP fisheye IP 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. They target buyers who need full 360-degree panoramic coverage from a single camera. The key differentiators are environment rating, IR capability, low-light sensitivity, and physical ruggedization — the S4176A is an indoor ceiling/wall unit while the S4576LMA is an outdoor-rated dome built for harsh conditions.
In This Guide
How do the imaging specs compare?
Both cameras use the same approximate 1/2-type 12MP CMOS sensor, 1.4mm focal length, F1.9 maximum aperture, and deliver identical ceiling-mount resolution of 2992×2992 (Fisheye) and 2560×1920 (PTZ), with identical 84 dB maximum dynamic range at WDR Level 31. The S4576LMA specifies 30fps explicitly; the S4176A does not state a maximum frame rate in the provided specs.
Low-light performance diverges. The S4176A achieves 0.3 lx color / 0.2 lx B&W without IR. The S4576LMA achieves 0.3 lx color but a significantly lower 0.04 lx B&W, backed by built-in IR LEDs rated to 14m maximum range. This gives the S4576LMA a meaningful advantage in near-darkness and zero-lux operation via IR illumination — a capability the S4176A entirely lacks. Coverage geometry is identical: detect radius 56.1m, observe 20.6m, recognize 8.4m at a 3m mounting height.
What about installation and environment?
The S4176A is rated for indoor use only — no IP ingress rating or impact rating is specified. It operates from -10°C to +50°C at 10–90% relative humidity (no condensation). Its ABS resin housing weighs approximately 420g and measures ø150mm × 49.5mm. Power is DC 12V / 680mA or PoE IEEE 802.3af (Class 0).
The S4576LMA is purpose-built for outdoor and harsh-environment deployment. It carries IP66 (IEC60529), NEMA 4X (UL50), and IK10 (IEC 62262) ratings, with 50J shock resistance (IEC 60068-2-75), wind resistance to 40 m/s (~89 mph), and EN45545 / EN50155-TX railway compliance. Operating temperature spans -40°C to +60°C at 10–100% humidity, supported by a built-in Rosahl anti-condensation element. Its aluminum, stainless steel, and polycarbonate construction raises the weight to approximately 880g, with dimensions ø154mm × 60.3mm. Power is DC 12V / 1.1A or PoE IEEE 802.3af (Class 0) — higher current draw than the S4176A.
Which fits your VMS and analytics better?
Both cameras support ONVIF Profiles G, M, S, and T; H.265/H.264 with CBR/VBR and unicast/multicast; JPEG at 10 quality steps; Smart Coding with GOP control and Auto VIQS; microSD edge storage; HTTPS encryption; signed firmware; and Android/iOS mobile access. 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). Both provide 8 privacy zones, 4 VMD areas, and 3 alarm inputs with 1 alarm output and 1 AUX output.
Audio support differs in one detail. The S4176A includes a built-in nondirectional electret condenser microphone and lists audio compression options (G.726 16/32 kbps, G.711 64 kbps) explicitly. The S4576LMA provides a 3.5mm stereo audio input jack (plug-in power) and audio output, but no built-in microphone is specified. The S4576LMA additionally provides a monitor output (VBS 1.0V p-p, 75Ω, 3.5mm jack, NTSC/PAL) for lens alignment — not listed for the S4176A. The S4576LMA's EMC certifications extend to ECE-R10, EN50498, and EN50121 (railway) beyond the S4176A's standard FCC/CE suite. Maximum concurrent users (up to 14) is stated only for the S4176A; the S4576LMA spec does not include that figure.
Which should you choose: the S4176A or the S4576LMA?
Our take: The S4576LMA is the stronger choice when the deployment site is outdoors or in any environmentally demanding location. Its IP66/NEMA 4X/IK10 ratings and -40°C to +60°C operating range make it suitable for exposed exteriors, transportation infrastructure, and industrial environments where the S4176A — an indoor-only ABS unit rated only to -10°C and carrying no ingress or impact protection — cannot be installed. The S4576LMA also adds 14m IR illumination and 0.04 lx B&W sensitivity versus the S4176A's 0.2 lx B&W with no IR, a critical delta for unlit outdoor areas at night. Conversely, the S4176A is the appropriate choice for indoor ceiling installations where a built-in microphone is required, maximum concurrent access matters (stated at 14 users), and the lighter 420g form factor eases integration. Both cameras deliver identical 12MP 183° fisheye imaging geometry and the same AI analytics platform.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | i-PRO S4176A | i-PRO S4576LMA |
|---|---|---|
| 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 / B&W) | 0.3 lx / 0.2 lx | 0.3 lx / 0.04 lx |
| IR Illumination / Range | — (none) | Built-in IR, 14m max |
| Max Frame Rate | Not specified | 30 fps |
| Dynamic Range (WDR) | Max. 84 dB (Level 31) | Max. 84 dB (Level 31) |
| Video Compression | H.265, H.264, JPEG | H.265, H.264, JPEG |
| IP / Ingress Rating | — | IP66 (IEC60529), NEMA 4X |
| IK / Impact Rating | — | IK10 (IEC 62262), 50J shock |
| Operating Temperature | -10°C to +50°C | -40°C to +60°C |
| 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 |
| Dimensions | ø150mm × 49.5mm (H) | ø154mm × 60.3mm (H) |
| Weight | Approx. 420g (0.93 lbs) | Approx. 880g (1.94 lbs) |
| Environment Rating | Indoor only | Outdoor (IP66, NEMA 4X, IK10) |
| Warranty | 5-Year | 5-Year |
Frequently Asked Questions
Which should you choose: the S4176A or the S4576LMA?
The S4576LMA is the stronger choice when the deployment site is outdoors or in any environmentally demanding location. Its IP66/NEMA 4X/IK10 ratings and -40°C to +60°C operating range make it suitable for exposed exteriors, transportation infrastructure, and industrial environments where the S4176A — an indoor-only ABS unit rated only to -10°C and carrying no ingress or impact protection — cannot be installed. The S4576LMA also adds 14m IR illumination and 0.04 lx B&W sensitivity versus the S4176A's 0.2 lx B&W with no IR, a critical delta for unlit outdoor areas at night. Conversely, the S4176A is the appropriate choice for indoor ceiling installations where a built-in microphone is required, maximum concurrent access matters (stated at 14 users), and the lighter 420g form factor eases integration. Both cameras deliver identical 12MP 183° fisheye imaging geometry and the same AI analytics platform.
Is the S4176A or S4576LMA better for low-light performance?
The S4576LMA is significantly better in low light. It achieves 0.04 lx B&W sensitivity and includes built-in IR LEDs rated to 14m range, enabling near-zero-lux operation. The S4176A reaches 0.2 lx B&W but has no IR illumination, making it unsuitable for unlit environments.
Can I install the S4576LMA indoors to future-proof against outdoor use later?
The S4576LMA's IP66/NEMA 4X/IK10 ratings and -40°C to +60°C range make it fully capable of indoor installation, but it draws more power (DC 12V / 1.1A vs 680mA for the S4176A on the same PoE 802.3af Class 0 budget) and is approximately twice the weight. Verify your PoE switch can supply adequate wattage and that the mounting surface supports 880g before substituting it indoors.
Do both cameras support the same AI analytics and VMS integrations?
Yes. Both share the same AI analytics suite — AI-VMD, AI People Counting, AI Privacy Guard, AI Scene Change Detection, and AI Sound Classification — and both support ONVIF Profiles G, M, S, and T. The primary integration difference is that the S4176A includes a built-in microphone (audio compression specs provided), while the S4576LMA requires an external microphone via its 3.5mm audio input jack; no built-in mic is specified for the S4576LMA.
Get a Second Opinion on Your Camera Choice
Share your site layout, coverage goals, and budget. Our team will validate the camera selection, flag anything we would change, and recommend products that match the use case.