Hanwha SMT-3231PV vs Hanwha SMT-3221PV: Specification Comparison
The Hanwha SMT-3231PV and SMT-3221PV are both 32-inch AI Public View Monitors featuring an integrated 2MP IP camera, dual HDMI inputs, PoE++ power delivery, and onboard AI analytics. Both are designed for retail and transit surveillance environments where a combined display-and-camera unit reduces installation complexity. This comparison examines their display performance, physical and environmental specifications, and camera plus analytics capabilities to help integrators and IT buyers determine which unit better fits a given deployment.
In This Guide
- How do the SMT-3231PV and SMT-3221PV compare on display performance and image quality?
- How do the two monitors differ in physical build, power requirements, and operating environment?
- Which monitor offers stronger camera performance, AI analytics, and system integration capabilities?
- Which should you choose: the SMT-3231PV or the SMT-3221PV?
- Side-by-Side Specs
- FAQ
How do the SMT-3231PV and SMT-3221PV compare on display performance and image quality?
The SMT-3231PV provides explicit display performance figures: 400 cd/m² brightness, a 1300:1 contrast ratio, 178°/178° horizontal/vertical viewing angles, a 25 ms response time, 16.7 million colors, and a rated panel life of 30,000 hours. Resolution is 1920×1080 (Full HD) at up to 60 Hz via HDMI 1.4 x 2.
The SMT-3221PV lists display color as 16.7 million colors and screen size as 31.55 inches, matching the SMT-3231PV on those two points. However, brightness, contrast ratio, viewing angle, response time, and panel life are not stated in the provided SMT-3221PV specifications. Buyers requiring a guaranteed brightness level, contrast floor, or viewing-angle assurance for high-ambient-light or wide-aisle deployments will find the SMT-3231PV's published figures more straightforwardly verifiable at this stage.
How do the two monitors differ in physical build, power requirements, and operating environment?
The SMT-3231PV specifies dimensions of 734 mm (W) × 490 mm (H) × 68 mm (D) without stand, a weight of 12.4 kg, a black cabinet color, and VESA mount compatibility at 100×100, 200×100, and 200×200 mm patterns. Power input is DC 24 V or HPOE (802.3bt), with a rated consumption of 56 W. Operating range is 0–40°C at 10–80% non-condensing humidity.
The SMT-3221PV lists dimensions of 2.7 × 28.9 × 19.0 inches (approximately 69 mm × 734 mm × 483 mm) and a weight of 38 lb (approximately 17.2 kg per the imperial figure; a separate field also states 27.34 kg, creating an inconsistency in the provided data). Cabinet construction is described as steel. Power input is likewise DC 24 V or PoE++ (802.3bt), and operating temperature is 0–40°C. Rated power consumption, operating humidity ceiling, and VESA mount pattern are not specified for the SMT-3221PV. The SMT-3221PV is explicitly rated for indoor use only; the SMT-3231PV's provided specs do not state an environment rating.
Which monitor offers stronger camera performance, AI analytics, and system integration capabilities?
Both units integrate a 2MP CMOS sensor with a 107.7° field of view and a minimum illumination of 0.03 lux (F1.6, 1/30 sec), and both support H.265/H.264/MJPEG compression at up to 30 fps. Both comply with ONVIF Profile S/G/T/M and support PoE++ (802.3bt).
The SMT-3231PV provides substantially more detail on analytics and integration: AI analytics covering motion, object detection, virtual line/area, intrusion, and loitering; business intelligence functions including people counting, queue management, and heatmap; 120 dB WDR with BLC and SSDR; digital noise reduction via SSNR V and WiseNR II (AI-based); 8-zone polygonal motion detection; 32-zone privacy masking; WiseStream III smart codec; 1 RJ-45 10/100BASE-T Ethernet; alarm I/O (1 input / 1 output); edge storage up to 256 GB via Micro SD/SDHC/SDXC; 2 GB RAM / 1 GB Flash; and a full security stack including 802.1X, HTTPS, SRTP, secure boot, signed firmware, and SD card partition encryption.
The SMT-3221PV's provided specs confirm 120 dB WDR, H.265/H.264/MJPEG, ONVIF Profile S/G/T/M, people counting, AI object classification, face detection, loitering, and line crossing. Ethernet port count and speed, alarm I/O, edge storage capacity, RAM/Flash, smart codec branding, and the full cybersecurity feature set are not enumerated in the SMT-3221PV data provided.
Which should you choose: the SMT-3231PV or the SMT-3221PV?
Our take: The SMT-3231PV is the stronger documented choice when specification completeness and verified feature depth are required at time of purchase. Across all three decision axes, the SMT-3231PV provides concrete numbers the SMT-3221PV's provided data omits: 400 cd/m² brightness and 1300:1 contrast versus no stated figures for the SMT-3221PV; a confirmed 56 W power draw and 12.4 kg weight versus conflicting weight entries (38 lb / 27.34 kg) and no power draw figure for the SMT-3221PV; and an explicitly documented security stack—802.1X, secure boot, SRTP, SD card encryption—plus alarm I/O, 256 GB edge storage, WiseStream III, and WiseNR II AI noise reduction, none of which appear in the SMT-3221PV spec sheet provided. If the SMT-3221PV's full datasheet resolves these gaps and confirms equivalent capability, it may suit cost-sensitive indoor-only retail deployments; however, integrators specifying against a written BOM or responding to a security-hardened tender should select the SMT-3231PV based on currently available documentation.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Hanwha SMT-3231PV | Hanwha SMT-3221PV |
|---|---|---|
| Panel Size (stated) | 31.55" (marketed as 32") | 31.55" (marketed as 32") |
| Resolution | 1920×1080 (FHD) | Not specified in provided data |
| Brightness | 400 cd/m² | — |
| Contrast Ratio | 1300:1 | — |
| Viewing Angle (H/V) | 178° / 178° | — |
| Response Time | 25 ms | — |
| Panel Life | 30,000 hours | — |
| Display Colors | 16.7M | 16.7M |
| Integrated Camera | 2MP CMOS, 1/2.8", 107.7° FOV, f1.6 | 2MP CMOS, 107.7° FOV, f1.6 |
| Min. Illumination | 0.03 lux (F1.6, 1/30 sec) | 0.03 lux |
| Wide Dynamic Range | 120 dB (WDR/BLC/SSDR) | 120 dB (WDR/BLC) |
| Video Compression | H.265 / H.264 / MJPEG | H.265 / H.264 / MJPEG |
| Max. Framerate | 30 fps | 30 fps |
| ONVIF Profiles | S / G / T / M | S / G / T / M |
| AI Analytics | Motion, object, virtual line/area, intrusion, loitering, people counting, queue management, heatmap | Object classification, face detection, loitering, line crossing, people counting |
| Smart Codec | WiseStream III | — |
| Noise Reduction | SSNR V, WiseNR II (AI-based) | — |
| HDMI Inputs | HDMI 1.4 × 2 | HDMI 1.4 × 2 |
| Ethernet | 1× RJ-45 10/100BASE-T | — |
| Alarm I/O | 1 input / 1 output | — |
| Edge Storage | MicroSD/SDHC/SDXC, 1 slot, up to 256 GB | — |
| RAM / Flash | 2 GB RAM / 1 GB Flash | — |
| Power Input | DC 24 V, HPOE 802.3bt | DC 24 V, PoE++ 802.3bt |
| Power Consumption | 56 W | — |
| Operating Temperature | 0 – 40°C (32 – 104°F) | 0 – 40°C |
| Operating Humidity | 10 – 80% non-condensing | — |
| Dimensions W×H×D (without stand) | 734 × 490 × 68 mm | ≈734 × 483 × 69 mm (28.9 × 19.0 × 2.7 in) |
| Weight | 12.4 kg | 38 lb / 27.34 kg (conflicting data in provided specs) |
| Cabinet Color | Black | White |
| Cabinet Material | — | Steel |
| Environment Rating | — | Indoor |
| VESA Mount Patterns | 100×100, 200×100, 200×200 mm | — |
| 802.1X Authentication | EAP-TLS, EAP-LEAP, EAP-PEAP MSCHAPv2 | — |
| Secure Boot / Signed Firmware | Yes | Yes |
| SD Card Encryption | Yes (partition encrypt) | — |
| Warranty | — | 5-Year |
Frequently Asked Questions
Which should you choose: the SMT-3231PV or the SMT-3221PV?
The SMT-3231PV is the stronger documented choice when specification completeness and verified feature depth are required at time of purchase. Across all three decision axes, the SMT-3231PV provides concrete numbers the SMT-3221PV's provided data omits: 400 cd/m² brightness and 1300:1 contrast versus no stated figures for the SMT-3221PV; a confirmed 56 W power draw and 12.4 kg weight versus conflicting weight entries (38 lb / 27.34 kg) and no power draw figure for the SMT-3221PV; and an explicitly documented security stack—802.1X, secure boot, SRTP, SD card encryption—plus alarm I/O, 256 GB edge storage, WiseStream III, and WiseNR II AI noise reduction, none of which appear in the SMT-3221PV spec sheet provided. If the SMT-3221PV's full datasheet resolves these gaps and confirms equivalent capability, it may suit cost-sensitive indoor-only retail deployments; however, integrators specifying against a written BOM or responding to a security-hardened tender should select the SMT-3231PV based on currently available documentation.
Do both the SMT-3231PV and SMT-3221PV support PoE++ so I can avoid a separate power run?
Yes. Both models list PoE++ (802.3bt) as a supported input voltage alongside DC 24 V, so either unit can be powered from a single CAT cable connected to an 802.3bt-capable switch. The SMT-3231PV additionally specifies a 56 W consumption figure; the SMT-3221PV's rated draw is not stated in the provided specs, so confirm that figure with Hanwha before specifying the PoE++ switch budget.
Is the SMT-3221PV or SMT-3231PV a better fit for a deployment that requires cybersecurity compliance documentation?
Based on the specifications provided, the SMT-3231PV is better documented for cybersecurity-sensitive deployments. It explicitly lists 802.1X authentication (EAP-TLS, EAP-LEAP, EAP-PEAP MSCHAPv2), HTTPS/SRTP/WSS, secure boot, signed and encrypted firmware, SD card partition encryption, digest authentication, brute-force prevention, IP-based access control, and a Hanwha Private Root CA device certificate. The SMT-3221PV's provided data references secure boot and signed firmware only; the remaining controls are not enumerated.
Both monitors are listed as 32 inches — are their physical footprints actually the same size?
Both share a 31.55-inch panel and a very similar width dimension (SMT-3231PV: 734 mm W; SMT-3221PV: 28.9 in ≈ 734 mm W). The SMT-3231PV is specified at 490 mm H × 68 mm D and 12.4 kg. The SMT-3221PV lists 19.0 in H (≈ 483 mm) × 2.7 in D (≈ 69 mm), but carries conflicting weight data (38 lb ≈ 17.2 kg vs. a separate 27.34 kg field). Verify the SMT-3221PV weight with Hanwha before specifying mount load ratings.
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