Introduction: Meet the Hikvision 4 MP AcuSense PTRZ Varifocal Dome
Hikvision DS-2CD2746G2H-IPTRZS2U/SLis a purpose-built 4 MP AcuSense PTRZ varifocal dome network camera designed for demanding indoor and outdoor surveillance. Combining a high-quality 1/1.8" progressive CMOS sensor, motorised 2.8–12 mm F1.2 varifocal lens with remote PTRZ control (Pan, Tilt, Rotate, Zoom), and Hikvisions AcuSense deep-learning person/vehicle classification, this camera targets installations that need accurate detection, reliable image quality in challenging light, and active deterrence capability.
Priced competitively (suggested price around $240.16), the DS-2CD2746G2H-IPTRZS2U/SL sits between basic fixed cameras and full-size PTZ systems, offering a versatile mix of high-resolution imaging, smart analytics, and rugged build quality suitable for commercial, retail, education and infrastructure deployments.
Key features at a glance
- 4 MP (2688 x 1520) @ up to 30 fps with 120 dB WDR and 3D DNR for clear images in high-contrast scenes.
- Motorised varifocal lens 2.8 612 mm, F1.2 with remote PTRZ control for flexible framing and focus without ladder work.
- AcuSense deep-learning human and vehicle classification to reduce false alarms from animals, weather or background motion.
- IR illumination up to 40 m plus smart white supplement light and strobe for colour images and active deterrence in low light.
- Two-way audio (built-in dual-array microphones and speaker) and alarm I/O for audible/visual responses.
- PoE+ (IEEE 802.3at), H.265/H.264 compression, ONVIF compatibility and local microSD storage up to 512 GB.
- Rugged metal housing rated IP66 and IK10 for weather- and vandal-resistant installations.
Detailed specifications and practical benefits
The cameras 1/1.8" progressive scan CMOS sensor captures up to 4 MP resolution (2688x1520) at 30 fps, providing detailed footage suitable for identification and forensic review. With a wide dynamic range of 120 dB and 3D digital noise reduction (3D DNR), the camera copes well with scenes that combine bright and dark areas, such as entrances or parking lots that include backlit subjects.
The motorised varifocal 2.8 612 mm lens (F1.2) delivers a horizontal field of view from about 114.66 to 41.86, letting installers switch between broad situational awareness and tighter, close-up views remotely. PTRZ control (pan, tilt, rotate and zoom) removes the need for repeat physical adjustments, saving time and service calls.
Low-light sensitivity is excellent: colour imaging down to ~0.0008 Lux (F1.2, AGC ON) and B/W at 0 Lux with IR. The camera integrates 850 nm IR LEDs for night vision up to 40 metres, plus a smart white supplement light and strobe function. The white light option not only improves colour detail at night but also acts as a visual deterrent when paired with the built-in speaker for two-way voice or alarm tones.
AcuSense deep-learning algorithms classify motion as human or vehicle, significantly cutting false alerts caused by animals, falling leaves, or weather. The camera also supports line crossing and region intrusion detection (model-dependent), enabling event-driven recording and notifications. For site operators this means fewer nuisance alarms and faster response to genuine incidents.
Onboard audio includes dual-array microphones and a speaker plus audio terminals for integration with local audio devices. The camera supports multiple codecs (G.711/G.722.1/G.726/MP2/MP3/AAC-LC) for flexible audio quality. Local storage via microSD/microSDHC/microSDXC up to 512 GB provides a buffer or independent recording option, while network storage to NAS is supported with ANR for resilience during network outages.
H.265 and H.264 compression reduce bandwidth and storage costs without sacrificing image detail. ONVIF compliance and support for standard protocols (RTSP, HTTPS, SNMP, etc.) make integration into existing VMS/NVR systems straightforward.
The camera accepts 12 VDC or PoE+ (IEEE 802.3at), with maximum power consumption in the region of 16 618 W depending on configuration (lights, audio, heater if fitted). A metal housing rated IP66 and IK10 provides weatherproofing and vandal resistance for outdoor or exposed indoor sites, and an operating range from 630 6C to 60 6C suits most climates.
Use cases and ideal scenarios
This camera fits installations that require a balance between situational coverage, smart detection, and deterrence capability. Typical use cases include:
- Retail and shopping centres: monitor entrances, aisles and loading zones with accurate person detection and two-way audio for loss prevention and customer assistance.
- Commercial premises and office parks: flexible framing with remote zoom to cover reception areas, parking spaces, and perimeters without multiple cameras.
- Car parks and transport hubs: vehicle and human classification reduces false events in windy or busy environments; IR and white light extend effective surveillance hours.
- Schools and campuses: identify and respond to incidents with human/vehicle alerts and use speaker/strobe to deter trespassers.
- Critical infrastructure and utility sites: rugged IP66/IK10 build with secure networking options supports continuous monitoring in harsh conditions.
Comparisons with similar products on the market
When evaluating the DS-2CD2746G2H-IPTRZS2U/SL, consider where it sits relative to three common camera categories:
- Fixed lens dome cameras:Fixed cameras are generally cheaper and simpler but lack remote zoom/focus (PTRZ). The Hikvision PTRZ model offers the convenience of remote adjustment and greater scene flexibility with only a modest price increase.
- Traditional PTZ cameras:Full PTZ units deliver large-area panning and high optical zoom but are typically larger, more complex and more expensive. The PTRZ dome provides many of the framing and zoom benefits at a lower cost and with a more compact, vandal-resistant form factor, though it wont replace a PTZ for active patrol-style monitoring.
- Other smart-analytics cameras:Competing models may offer analytics, but Hikvisions AcuSense is notable for its emphasis on reducing false positives with proven person/vehicle classification. For buyers prioritising fewer nuisance alerts, the AcuSense advantage can reduce operational overhead.
In short, this camera sits between entry-level fixed domes and full PTZs: superior to fixed models in flexibility and analytics, and more affordable and compact than large PTZs for sites that do not require continuous active tracking.
Customer feedback and typical testimonials
While specific customer reviews vary by installer and end-user, common themes reported by users of Hikvision AcuSense PTRZ cameras include:
- Positive:Noticeably fewer false alarms after enabling AcuSense, straightforward integration with ONVIF/NVRs, good low-light performance with the white light option, and helpful remote zoom/focus during commissioning.
- Constructive feedback:Some installers highlight the importance of following network-security best practices (change default passwords, enable HTTPS/802.1X/TLS) and ensuring firmware is kept up to date. Others note that leveraging the white light feature requires thoughtful configuration to avoid disturbing nearby residents or occupants.
These commonly reported points reflect the cameras strengths—analytics, imaging and deterrence—while underlining the need for professional installation and secure network configuration.
Installation tips and security considerations
To get the most from this camera:
- Use PoE+ where available to simplify cabling and provide reliable power without separate DC runs.
- Plan framing ranges before finalising mounts, then use remote PTRZ adjustments to fine-tune without repeated physical access.
- Enable AcuSense and tune detection areas to reduce false positives; test under different lighting and weather conditions.
- Follow network security best practices: change default credentials, enable HTTPS and latest TLS versions, consider 802.1X where supported, and keep firmware current.
- Mind local regulations for audio recording and use of white light/strobe—obtain permissions where required.
Conclusion: Why this camera is a strong choice
The Hikvision DS-2CD2746G2H-IPTRZS2U/SL delivers a compelling blend of image quality, smart analytics and practical installation features at a price point that suits mid-range commercial projects. Its 4 MP sensor, motorised 2.8 612 mm PTRZ lens, AcuSense human/vehicle classification and combined IR/white-light deterrence make it versatile across retail, parking, campus and critical infrastructure scenarios. Rugged IP66/IK10 construction and PoE+ support further simplify deployment in exposed sites.
For organisations seeking better detection accuracy and active deterrence without the complexity or cost of full PTZ systems, this AcuSense PTRZ dome is a balanced, cost-effective option. As with any networked camera, the benefits are maximised when installed by qualified professionals and managed with appropriate security and maintenance practices.
Product summary:4 MP resolution, motorised 2.8 612 mm F1.2 PTRZ lens, AcuSense person/vehicle analytics, IR to 40 m plus white light/strobe, two-way audio, PoE+, IP66/IK10—an adaptable surveillance camera for installations that demand both reliable detection and flexible coverage.
