Introduction to the Hikvision DS-2CD2T46G2H-4I (4 mm) 4 MP DarkFighter AcuSense Bullet Camera
The Hikvision DS-2CD2T46G2H-4I is a 4 MP outdoor bullet IP camera that blends low-light imaging and intelligent analytics to meet demanding perimeter and site surveillance needs. Part of Hikvision's Pro series, this model pairs DarkFighter sensor technology for superior colour performance in very low light with AcuSense deep‑learning human and vehicle classification. That combination delivers clear daytime and nighttime images while reducing nuisance alarms, making the camera an attractive choice for commercial sites, car parks, building façades and other critical outdoor locations.
Key features at a glance
- Resolution:4 MP (2688 × 1520) for detailed images and useful digital zoom.
- Low-light imaging:DarkFighter technology provides improved colour and clarity in near-dark conditions.
- Smart detection:AcuSense analytics classify humans and vehicles to reduce false alarms from animals, weather or light changes.
- Night illumination:Smart IR/supplement light up to ~80 m (4 mm model) for long-range scene coverage.
- Robust build:Metal housing with IP67 ingress protection for outdoor durability.
- Flexible networking:PoE (IEEE 802.3af) support, ONVIF compatibility and local microSD storage up to 512 GB.
Detailed specifications and benefits
Understanding the DS-2CD2T46G2H-4I’s specifications helps explain how it performs in real-world deployments. Below we break the camera down into its main technical areas and the practical benefit each delivers.
- Image sensor:1/3" Progressive Scan CMOS captures fine details and reduces motion blur.
- Maximum resolution:2688 × 1520 (4 MP) provides a good balance of wide coverage and image detail for identification and evidence capture.
- Lens and field of view:Fixed 4.0 mm, F1.0 lens with ≈81.1° horizontal FOV — suitable for broad scene coverage such as car parks and building approaches.
- Minimum illumination:Colour 0.001 Lux @ F1.0 and B/W 0 Lux with IR — DarkFighter tech preserves colour at very low light levels, aiding recognition and forensic review.
- Wide dynamic range & noise reduction:120 dB True WDR and 3D-DNR improve image quality in scenes with high contrast (backlight) and reduce noise in low-light conditions.
- IR / supplement light:Smart supplement light up to ~80 m (850 nm) — long-range coverage for perimeter and large open areas. The smart illumination helps avoid overexposure of near objects while illuminating distant targets.
- DORI (4 mm):Detect 78 m, Observe 31 m, Recognise 15 m, Identify 7 m — useful guidance for placement depending on whether you need detection or identification.
- AcuSense human & vehicle classification:Deep‑learning algorithms distinguish people and vehicles from irrelevant motion such as rain, leaves or small animals, lowering event-to‑review ratios and improving operator efficiency.
- Triple stream and compression:H.265+/H.265/H.264+/H.264 with triple-stream support lets you optimise bandwidth and storage while maintaining a high-resolution forensic stream for investigations.
- Connectivity:10/100 Mbps Ethernet, PoE (IEEE 802.3af) support simplifies installs by carrying power and data over one cable.
- Local storage:microSD/SDHC/SDXC up to 512 GB provides failover recording if network storage is unavailable.
- Durability and mounting:Metal housing, IP67 rated for outdoor use and rated for -30 °C to +60 °C operating temperature — appropriate for a wide range of climates and exposed locations.
Use cases and scenarios where this camera excels
The DS-2CD2T46G2H-4I is well suited to environments that demand reliable detection, long-range illumination and robust outdoor performance:
- Perimeter surveillance:Long-range IR and DarkFighter low-light capability make the camera effective for fences and property boundaries where detection at distance is important.
- Car parks and vehicle yards:AcuSense classification reduces false vehicle alarms while the wide field of view and 4 MP resolution capture licence plates and occupant activity when positioned correctly.
- Commercial facades and entrances:The camera’s ability to handle mixed lighting (WDR) and keep colour at low light improves identification at building approaches and loading bays.
- Remote or unstaffed sites:PoE simplifies deployment, and local microSD recording + analytics reduce the need for continuous human monitoring.
- Integrator and upgrade projects:ONVIF compatibility and flexible streaming options make it straightforward to integrate into existing VMS and NVR platforms as part of CCTV upgrades.
Comparisons with similar products on the market
When comparing the Hikvision DS-2CD2T46G2H-4I to other cameras, consider three main pillars: low-light performance, analytics, and total cost of ownership (installation + storage + monitoring). Below are general comparisons to typical alternatives.
Hikvision’s DarkFighter is engineered to maintain colour and clarity at extremely low lux levels. Some competing “Starlight” or low-light cameras also aim for similar results; however, DarkFighter implementations are often praised for producing more usable colour images at night rather than switching to monochrome sooner. For environments where colour detail at night (clothing, vehicle colour) matters, DarkFighter offers a practical advantage.
AcuSense deep‑learning classification typically reduces false positives compared with traditional PIR or pixel-change motion detection. Competing smart analytics from other vendors also provide object classification, but the effectiveness depends on algorithm maturity and correct configuration. For many deployments, AcuSense provides a clear operational benefit by lowering unnecessary alerts.
Compared with similarly spec’d cameras from other mainstream manufacturers, this Hikvision model balances performance and cost effectively — offering 4 MP imaging, long IR reach and advanced analytics at a competitive price point. Integrators should evaluate ONVIF compatibility and codec support to ensure smooth integration into preferred VMS/NVR solutions.
Customer feedback and typical reviews
While individual experiences vary by site and installation quality, typical feedback from installers and end users for cameras in this category includes the following themes:
- Positive:Many users highlight excellent low-light colour performance and the practical reduction in false alarms thanks to AcuSense. Installers appreciate PoE support and a rugged metal housing for outdoor work.
- Constructive:Some comments note that analytics need careful tuning — placement, sensitivity and region settings affect classification accuracy. In heavy foliage or very cluttered scenes, occasional false positives can still occur without optimisation.
- Operational:Users recommend pairing the camera with a good VMS and planned storage strategy (H.265+ enabled) to maximise image retention while minimising bandwidth and cost.
Note: Always consult independent reviews for region- and firmware-specific observations, and work with authorised installers for best results.
Conclusion — why choose the DS-2CD2T46G2H-4I?
The Hikvision DS-2CD2T46G2H-4I is a versatile outdoor bullet camera that brings together low-light DarkFighter imaging, long-range IR illumination and AcuSense analytics in a rugged IP67 package. Its strengths are clear: superior night-time colour detail, deep‑learning-based human/vehicle classification to cut false alarms, flexible PoE installation and local storage options for resilient recording. These attributes make it especially well suited to perimeter monitoring, car parks, commercial entrances and remote sites where reliable detection and clear evidence capture are essential.
For integrators and site owners seeking a practical balance of image quality, smart analytics and outdoor robustness without premium pricing, the DS-2CD2T46G2H-4I is a strong candidate. As with any security camera, optimal results depend on correct placement, network design and configuration — consult the product datasheet and a qualified installer to tailor the solution to your site.
- Resolution:4 MP (2688 × 1520)
- Lens:Fixed 4.0 mm, F1.0
- Night vision:Smart IR / supplement light up to ~80 m
- Analytics:AcuSense human & vehicle classification
- Protection:IP67 metal housing
- Power & storage:PoE (IEEE 802.3af) or 12 V DC; microSD up to 512 GB
If you need help comparing this model to a specific alternative or want recommendations for camera placement and configuration for your site, provide details about the area to be covered and we can advise on a tailored solution.
