i-PRO S1536LA-B vs i-PRO U1532LA: Specification Comparison
Both the i-PRO WV-S1536LA-B and WV-U1532LA are 2MP outdoor wired bullet cameras with motorized varifocal lenses, IP66/IK10 ratings, and PoE power — making them direct cross-shop candidates for fixed-mount perimeter and general-purpose surveillance deployments. The comparison covers imaging capability, environmental and installation requirements, and system integration features including analytics, audio, and VMS compatibility. Buyers choosing between them are likely weighing higher-end AI analytics and IR range against a lighter, more compact and lower-power entry-level profile.
In This Guide
How do the imaging specs compare?
The S1536LA-B uses an approximately 1/2.8-type CMOS sensor and delivers 1920×1080 at up to 60 fps, while the U1532LA uses a smaller approximately 1/3-type CMOS and is capped at 30 fps at the same 1920×1080 resolution. Low-light performance differs substantially: the S1536LA-B reaches 0.007 lx color and 0.005 lx B&W, dropping to 0 lx with IR active, whereas the U1532LA is rated at 0.1 lx color and 0.04 lx B&W with no IR-aided 0-lx figure provided in the supplied specs. Wide dynamic range also separates the two — the S1536LA-B achieves a maximum 144 dB with Super Dynamic on at level 31, compared to 120 dB for the U1532LA under the same Super Dynamic level 31 condition.
On optics, the S1536LA-B offers a 2.9–9 mm motorized varifocal lens (3.1x optical zoom, 37–117° horizontal FOV at 16:9), with a minimum focus distance of 0.3 m. The U1532LA's lens spans 2.9–7.3 mm (2.5x optical zoom, 43–100° horizontal FOV at 16:9), with a minimum focus distance of 1.0 m — a meaningful difference for close-in coverage scenarios. IR illumination range is 70 m (30IRE) / 50 m (50IRE) for the S1536LA-B versus 30 m for the U1532LA. DORI tele-identify distance is 11.5 m / 37.7 ft for the S1536LA-B and 9.8 m / 32.3 ft for the U1532LA, consistent with the optical and sensor differences.
What about installation and environment?
Both cameras share IP66, Type 4X / NEMA 4X, and IK10 ratings, and both are rated for wind resistance up to 40 m/s (~89 mph). However, their operating temperature ranges differ: the S1536LA-B supports -40°C to +60°C ambient (power-on from -30°C), and augments its anti-condensation system with a Temish element, heater, and moisture absorption gel. The U1532LA's rated range is -30°C to +50°C, with only a Temish element for anti-condensation — no heater is specified. Installations in extreme cold or heat should factor in these differences.
The S1536LA-B is physically larger (ø133 mm × 383 mm D) and heavier at approximately 2.4 kg (5.3 lbs), while the U1532LA is notably more compact (112.5 mm × 262 mm D) and lighter at approximately 860 g (1.90 lbs) — less than half the weight. Both support ceiling and wall mounting with ±180° pan adjustment. Power draw also differs: the S1536LA-B consumes 8.5–9.1 W via PoE 802.3af (or DC12V), whereas the U1532LA draws 6.7 W via PoE 802.3af only. Both are listed as PoE Class 0 in the supplied specs, though actual Class assignment should be confirmed against switch budgets given the wattage difference. The S1536LA-B also accepts DC12V as an alternative power source; the U1532LA does not specify this option.
Which fits your VMS and analytics better?
The S1536LA-B supports ONVIF Profiles G, M, S, and T, while the U1532LA supports Profiles G, S, and T — the S1536LA-B adds Profile M, which is relevant for metadata and analytics interoperability with compatible VMS platforms. On edge analytics, the S1536LA-B specifies AI Video Analytics (8 types) and AI Sound Classification (gunshot, yell, vehicle horn, glass break), plus VMD (4 areas), Scene Change Detection, and Audio Detection. The U1532LA's supplied specs list VMD (4 areas) and Scene Change Detection but do not specify AI analytics or audio detection beyond VMD/SCD alarm events.
Audio support is present on the S1536LA-B (3.5 mm stereo mic input and output, G.726/G.711/AAC-LC compression, half/full duplex modes, 3× alarm IN / 1× alarm OUT / 1× AUX OUT terminals), while the U1532LA specifies no audio input, no audio output, no audio compression, and no external I/O terminals per the supplied specs. Both models support microSD/SDHC/SDXC up to 512 GB for edge storage. The S1536LA-B is certified to FIPS 140-2 Level 3; the U1532LA lists device/host authentication and HTTPS but does not cite FIPS 140-2 in the supplied specs. Safety certifications also differ: the S1536LA-B carries UL62368-1 / CSA C22.2 No.62368-1, while the U1532LA carries the older UL60950-1 / CSA C22.2 No.60950-1 standard.
Which should you choose: the S1536LA-B or the U1532LA?
Our take: The S1536LA-B is the stronger choice when IR range, AI analytics, audio, or extreme-temperature operation are requirements. Concretely: it more than doubles the IR illumination range (70 m vs. 30 m), delivers 24 dB more wide dynamic range (144 dB vs. 120 dB), and adds full audio I/O plus AI Sound Classification and 8-type AI Video Analytics that are absent from the U1532LA's supplied specs. Its broader temperature floor (-40°C ambient) and integrated heater also make it the appropriate pick for cold-climate deployments. The U1532LA is a credible alternative where budgets favor a lighter, more compact form factor (860 g vs. 2.4 kg), lower PoE draw (6.7 W vs. up to 9.1 W), and general VMD-based analytics are sufficient — particularly in moderate-climate environments. Both carry a 5-year warranty and IK10/IP66 ratings.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | i-PRO S1536LA-B | i-PRO U1532LA |
|---|---|---|
| Resolution | 2MP (1920×1080) | 2MP (1920×1080) |
| Image Sensor | Approx. 1/2.8-type CMOS | Approx. 1/3-type CMOS |
| Max Frame Rate | 60 fps | 30 fps |
| Lens / Focal Length | 2.9–9 mm motorized varifocal (3.1x optical zoom) | 2.9–7.3 mm motorized varifocal (2.5x optical zoom) |
| Horizontal FOV (16:9) | 37°–117° | 43°–100° |
| Min Illumination (Color / B&W) | 0.007 lx / 0.005 lx (0 lx with IR) | 0.1 lx / 0.04 lx |
| IR Range | 70 m (30IRE) / 50 m (50IRE) | 30 m |
| Wide Dynamic Range | Max 144 dB (Super Dynamic On, Level 31) | Max 120 dB (Super Dynamic On, Level 31) |
| Video Compression | H.265, H.264, MJPEG | H.265, H.264, MJPEG |
| IP / Impact Rating | IP66, NEMA 4X, IK10 | IP66, NEMA 4X, IK10 |
| Operating Temperature | -40°C to +60°C (power-on: -30°C to +60°C) | -30°C to +50°C |
| Power Input / PoE | PoE 802.3af or DC12V, 8.5–9.1 W | PoE 802.3af only, 6.7 W |
| ONVIF Profiles | G, M, S, T | G, S, T |
| Audio I/O | 3.5 mm mic in + line out, half/full duplex, alarm I/O | — |
| Edge Storage | microSD/SDHC/SDXC up to 512 GB | microSD up to 512 GB |
| AI Analytics | AI Video Analytics (8 types), AI Sound Classification (4 types) | VMD (4 areas), SCD (1 area); no AI analytics specified |
| Dimensions (W × D) | ø133 mm × 383 mm | 112.5 mm × 262 mm |
| Weight | Approx. 2.4 kg (5.3 lbs) | Approx. 860 g (1.90 lbs) |
| Warranty | 5-year | 5-year |
Frequently Asked Questions
Which should you choose: the S1536LA-B or the U1532LA?
The S1536LA-B is the stronger choice when IR range, AI analytics, audio, or extreme-temperature operation are requirements. Concretely: it more than doubles the IR illumination range (70 m vs. 30 m), delivers 24 dB more wide dynamic range (144 dB vs. 120 dB), and adds full audio I/O plus AI Sound Classification and 8-type AI Video Analytics that are absent from the U1532LA's supplied specs. Its broader temperature floor (-40°C ambient) and integrated heater also make it the appropriate pick for cold-climate deployments. The U1532LA is a credible alternative where budgets favor a lighter, more compact form factor (860 g vs. 2.4 kg), lower PoE draw (6.7 W vs. up to 9.1 W), and general VMD-based analytics are sufficient — particularly in moderate-climate environments. Both carry a 5-year warranty and IK10/IP66 ratings.
Is the S1536LA-B or U1532LA better for low-light performance?
The S1536LA-B is significantly better per the supplied specs. It reaches 0.007 lx in color and 0.005 lx in B&W, falling to 0 lx with IR active, and its IR illuminators extend to 70 m (30IRE). The U1532LA is rated at 0.1 lx color and 0.04 lx B&W with a 30 m IR range — no 0-lx IR figure is provided in its specs. For scenes requiring long-range night coverage or very low ambient light, the S1536LA-B has a measurable advantage.
Can the U1532LA handle audio recording or two-way audio?
Based on the supplied specifications, no. The U1532LA lists no audio input, no audio output, no audio compression format, and no external I/O terminals. The S1536LA-B, by contrast, includes a 3.5 mm stereo mic input and output, supports G.726/G.711/AAC-LC compression, and operates in half or full duplex mode, with 3× alarm IN and 1× alarm OUT terminals. If audio or two-way intercom capability is required, the S1536LA-B is the only option of the two.
Which camera is easier to mount in a tight space or on a lightweight bracket?
The U1532LA is substantially more compact and lighter: 112.5 mm × 262 mm (D) and approximately 860 g (1.90 lbs). The S1536LA-B measures ø133 mm × 383 mm (D) and weighs approximately 2.4 kg (5.3 lbs) — nearly three times heavier. For installations with bracket load limits, conduit-entry constraints, or where a smaller camera profile is needed, the U1532LA has a clear physical advantage.
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.