i-PRO S15500-V3LK vs i-PRO X15500-V3L: Specification Comparison
Both the i-PRO WV-S15500-V3LK and WV-X15500-V3L are 5MP outdoor fixed bullet cameras sharing the same 1/2.8-inch CMOS sensor, 3.1x motorized varifocal lens, and 70m IR range. They occupy the same resolution class and form factor, making them direct cross-shop candidates for installers evaluating i-PRO's S-series versus X-series platforms. The comparison below focuses on the spec-level differences that matter most: low-light sensitivity, SoC generation, power requirements, extra zoom ceiling, image stabilization, and ingress protection depth.
In This Guide
How do the imaging specs compare?
Both cameras use an approximately 1/2.8-inch CMOS sensor with a 5.12 mm × 3.84 mm scanning area, a 2.9–9 mm motorized varifocal lens covering 34°–106° horizontal and 19°–77° vertical, and a maximum aperture of F1.3 at wide. Maximum dynamic range is identical at 132 dB (Super Dynamic on). IR illumination reaches 70 m on both units. Where they diverge is in low-light sensitivity: the S15500-V3LK specifies 0.05 lux (color) and 0.04 lux (B&W), while the X15500-V3L specifies only 0.02 lux (B&W at 50IRE, F1.3, 1/30 s); a direct color-mode lux figure for the X15500-V3L is not provided in the supplied specs. The S15500-V3LK shutter range extends to 1/30 s at the slow end versus 1/60 s for the X15500-V3L, which also adds a 1/4000 s maximum shutter note. DORI distances are identical across both models at all four tiers.
The SoC differs between models: the S15500-V3LK runs an Ambarella CV22, while the X15500-V3L uses the newer Ambarella CV52. The CV52 platform enables a higher extra-zoom ceiling—the X15500-V3L reaches 12.4x digital extra zoom at 640×360 resolution versus 9.3x on the S15500-V3LK. The X15500-V3L also specifies an image stabilizer (available in 30 fps mode only), which is absent from the S15500-V3LK spec sheet. Native resolution output differs: the S15500-V3LK lists 1920×1080 as its primary H.265/H.264 resolution, while the X15500-V3L lists 3072×1728 as its primary resolution—both are marketed as 5MP, but the X15500-V3L's stated output resolution is higher. The S15500-V3LK's frame-rate spec of 30 fps applies at 2048×1536 (4:3); both cameras cite 30 fps at their respective primary resolutions.
What about installation and environment?
Form factor and physical dimensions are effectively identical: both measure 133 mm (W) × 133 mm (H) × 383 mm (D) and carry IP66 and NEMA 4X ratings plus IK10 shock resistance and 40 m/s wind resistance. The S15500-V3LK adds IP67 is not listed for it, whereas the X15500-V3L explicitly adds IP67 (IEC 60529) alongside IP66. The S15500-V3LK lists an anti-condensation system (Temish element, heater, moisture-absorption gel) and ISO 14993 salt-damage resistance; neither of these is listed in the X15500-V3L specs. The S15500-V3LK also includes a monitor output (VBS 1.0V composite 75Ω) for lens adjustment in the field, which is not listed for the X15500-V3L.
Power requirements differ meaningfully. The S15500-V3LK accepts DC 12V at 1.0A (12W) or standard PoE at 11.5W (PoE Class 0). The X15500-V3L requires DC 12V at 1.2A or PoE+ at 14W (PoE Class 4, 802.3at). Installers using existing standard PoE (802.3af) switches can power the S15500-V3LK directly; the X15500-V3L demands PoE+ infrastructure or a DC supply. Operating temperature for the S15500-V3LK spans −40°C to +60°C, while the X15500-V3L is rated −40°C to +55°C—a 5°C narrower upper limit. Both carry identical safety certifications (UL62368-1, c-UL, CE, IEC62368-1) and the same EMC marks.
Which fits your VMS and analytics better?
Both cameras support ONVIF Profiles G, S, T, and M, up to 14 simultaneous users, H.265/H.264/MJPEG compression, microSDXC edge storage up to 512 GB, and FIPS 140-2 Level 3 secure element authentication. AI analytics on both include motion, face, vehicle, and occupancy detection, plus AI sound classification covering gunshot, yell, vehicle horn, and glass break. The S15500-V3LK spec sheet additionally lists eight AI Video Analytics detection types; the X15500-V3L lists four named types (motion, face, vehicle, occupancy). The X15500-V3L adds secure boot as a listed feature; this is not explicitly stated in the S15500-V3LK specs. The S15500-V3LK lists NXP SE050F as its hardware security element; the X15500-V3L lists 'Device Certificate' without naming a specific chip.
Audio and I/O are comparable but not identical. Both provide a 3.5 mm stereo audio input and output jack, G.726/G.711/AAC-LC compression, and half/full duplex modes. The S15500-V3LK specifies input impedance of 2 kΩ at −10 dBV and output at 600Ω/−20 dBV; the X15500-V3L lists 600Ω output but does not provide input impedance in the supplied specs. Alarm I/O: the S15500-V3LK provides 3 alarm inputs and 1 alarm output plus 1 AUX output; the X15500-V3L lists 4 alarm I/O terminals (IN1, IN2, IN3, OUT, AUX). IPv6 protocol support is listed for the S15500-V3LK (including RTSP, SRTP, and DDNS on IPv4); the X15500-V3L IPv6 protocol list omits RTSP and SRTP from the supplied specs. Both support MQTT and SFTP.
Which should you choose: the S15500-V3LK or the X15500-V3L?
Our take: The S15500-V3LK is the stronger choice when deploying into infrastructure limited to standard 802.3af PoE switches, high-ambient-temperature environments above 55°C, or coastal/salt-air sites requiring documented ISO 14993 salt-damage resistance and an active anti-condensation system. Key deltas: the S15500-V3LK draws only 11.5W on standard PoE (Class 0) versus the X15500-V3L's 14W PoE+ (Class 4), it is rated to +60°C versus +55°C, and it explicitly adds IP67 ingress depth, salt-resistance certification, and a field-adjustment composite video output not listed on the X15500-V3L. Conversely, the X15500-V3L suits projects requiring image stabilization, a higher extra-zoom ceiling (12.4x vs. 9.3x), a newer CV52 SoC, and IP67-listed ingress depth—provided the site has PoE+ switching capacity. Both carry identical 5-year warranties.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | i-PRO S15500-V3LK | i-PRO X15500-V3L |
|---|---|---|
| Resolution (Primary Output) | 1920×1080 (16:9); 2048×1536 (4:3) @ 30fps | 3072×1728 |
| Image Sensor | Approx. 1/2.8" CMOS | Approx. 1/2.8" CMOS |
| Lens / Focal Length | 3.1x motorized, 2.9–9 mm, F1.3–F2.5 | 3.1x motorized, 2.9–9 mm, F1.3–F2.5 |
| Min. Illumination (Color) | 0.05 lux | Not specified in provided specs |
| Min. Illumination (B&W) | 0.04 lux | 0.02 lux (50IRE, F1.3, 1/30 s) |
| IR Range | 70 m (30IRE) | 70 m |
| Dynamic Range (WDR) | 132 dB (Super Dynamic On, Level 30+, 15fps) | 132 dB (Super Dynamic On, Level 31) |
| Extra Digital Zoom Ceiling | 9.3x (at 640×360) | 12.4x (at 640×360) |
| Image Stabilizer | Not listed | Yes (30 fps mode only) |
| System on Chip (SoC) | Ambarella CV22 | Ambarella CV52 |
| Max Frame Rate | 30 fps | 30 fps |
| Video Compression | H.265, H.264, MJPEG | H.265, H.264, MJPEG |
| IP / Dust & Water Rating | IP66, NEMA 4X | IP66, IP67, NEMA 4X (UL50E) |
| IK / Impact Rating | IK10 (IEC 62262) | IK10 (IEC 62262) |
| Operating Temperature | −40°C to +60°C | −40°C to +55°C |
| Power Input / PoE Class | DC 12V 1.0A (12W) or PoE 11.5W (Class 0) | DC 12V 1.2A or PoE+ 14W (Class 4, 802.3at) |
| Salt / Condensation Protection | ISO 14993 salt resistance; Temish + heater + gel | Not listed in provided specs |
| Edge Storage | microSD/SDHC/SDXC up to 512 GB | microSDXC 64/128/256/512 GB |
| Audio | 3.5 mm in/out; G.726, G.711, AAC-LC; half/full duplex | 3.5 mm in/out; G.726, G.711, AAC-LC; half/full duplex |
| Alarm I/O | 3× alarm in, 1× alarm out, 1× AUX out | 4× alarm I/O (IN1, IN2, IN3, OUT, AUX) |
| ONVIF Profiles | G / M / S / T | G / S / T / M |
| Secure Boot | Not listed in provided specs | Yes |
| Hardware Security Element | NXP SE050F; FIPS 140-2 Level 3 | FIPS 140-2 Level 3; Device Certificate |
| Dimensions (W × H × D) | 133 × 133 × 383 mm | 133 × 133 × 383 mm |
| Weight | Approx. 2.4 kg (5.3 lbs) | Approx. 2.5 kg (5.6 lbs) |
| Warranty | 5-Year | 5-Year |
Frequently Asked Questions
Which should you choose: the S15500-V3LK or the X15500-V3L?
The S15500-V3LK is the stronger choice when deploying into infrastructure limited to standard 802.3af PoE switches, high-ambient-temperature environments above 55°C, or coastal/salt-air sites requiring documented ISO 14993 salt-damage resistance and an active anti-condensation system. Key deltas: the S15500-V3LK draws only 11.5W on standard PoE (Class 0) versus the X15500-V3L's 14W PoE+ (Class 4), it is rated to +60°C versus +55°C, and it explicitly adds IP67 ingress depth, salt-resistance certification, and a field-adjustment composite video output not listed on the X15500-V3L. Conversely, the X15500-V3L suits projects requiring image stabilization, a higher extra-zoom ceiling (12.4x vs. 9.3x), a newer CV52 SoC, and IP67-listed ingress depth—provided the site has PoE+ switching capacity. Both carry identical 5-year warranties.
Is the S15500-V3LK or X15500-V3L better for low-light performance?
Based on the supplied specs, the X15500-V3L lists a lower minimum illumination figure of 0.02 lux (B&W, 50IRE, F1.3, 1/30 s). The S15500-V3LK specifies 0.05 lux (color) and 0.04 lux (B&W). A color-mode lux value for the X15500-V3L is not provided in the available specs. Both cameras share the same 70m IR range and F1.3 wide-end aperture. If the B&W lux figure is the deciding metric, the X15500-V3L has the edge per spec; if color-mode sensitivity is critical, the S15500-V3LK's 0.05 lux color figure is the only available data point between the two.
Can I power either camera from a standard PoE (802.3af) switch?
Only the S15500-V3LK supports standard PoE at 11.5W (PoE Class 0, 802.3af). The X15500-V3L requires PoE+ at 14W (PoE Class 4, 802.3at). If your existing switch infrastructure is 802.3af only, the X15500-V3L will require either a PoE+ injector or a DC 12V supply at 1.2A, whereas the S15500-V3LK can run directly off the existing switch.
Which camera is better suited for harsh outdoor environments like coastal or extreme-heat sites?
The S15500-V3LK includes documented ISO 14993 salt-damage resistance, an active anti-condensation system (Temish element, heater, and moisture-absorption gel), and an upper operating temperature of +60°C. The X15500-V3L's supplied specs do not list salt-resistance certification or an anti-condensation system, and its upper temperature limit is +55°C. For coastal salt-air or high-ambient-temperature deployments, the S15500-V3LK has the listed specification advantage on all three of those criteria.
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