DS-2CD2T46G2H-2I (4mm) 4 MP DarkFighter Bullet Camera, AcuSense, IP67

Introduction: Meet the DS-2CD2T46G2H-2I (4mm) 4 MP DarkFighter Bullet Camera

The DS-2CD2T46G2H-2I (4mm) is a fixed bullet network camera designed for outdoor surveillance where clear detail and reliable detection are critical. Combining Hikvisions DarkFighter low-light imaging and AcuSense deep-learning human/vehicle classification, this 4 MP camera (2688  1520) offers colour imaging at very low light levels, long-range IR illumination, and intelligent filtering to reduce nuisance alarms. With an IP67 metal housing, PoE power, and support for microSD storage up to 512 GB, its targeted at perimeter, car-park and general commercial outdoor installations that demand both high image quality and operational efficiency.

Key features at a glance

• 4 MP (2688  1520) resolutionfor crisp image detail.
• DarkFighter low-light technology: colour imaging down to 0.001 lux; B/W 0 lux with IR.
• AcuSense human/vehicle classificationto cut false alarms from animals and environmental motion.
• Fixed 4 mm lenswith 81.1 horizontal field of view and long-range IR up to 80 m.
• Wide dynamic range (120 dB true WDR)plus 3D DNR and HLC/BLC for challenging lighting.
• Flexible storage & power: PoE (IEEE 802.3af) or 12 VDC; microSD up to 512 GB and NAS support.
• Ruggedized IP67 metal housingrated for -30 C to 60 C operating temperatures.

Detailed specifications and benefits

The camera uses a 1/3" progressive-scan CMOS sensor delivering 2688  1520 (4 MP) resolution at up to 25/30 fps. The fixed 4 mm M12 mount lens (F1.0) provides a wide horizontal field of view of 81.1, making it suitable for medium- to long-range coverage without the need for a mechanical zoom. At 4 MP, the camera captures greater scene detail than common 2 MP/1080p models, which helps with recognition tasks such as reading number plates at appropriate distances and improving forensic review quality.

DarkFighter technology is a core benefit: colour images are maintained down to 0.001 lux and it achieves black-and-white imaging at 0 lux when the IR is active. The 850 nm IR LEDs enable illumination up to 80 m on the 4I variant, providing clear night-time coverage for perimeters and car parks. This means fewer blind spots after dark and less reliance on external lighting, which can also reduce operating costs.

The cameras 120 dB true WDR handles scenes with strong backlight or mixed lighting, preserving detail in both highlights and shadows. 3D digital noise reduction (3D DNR) keeps images clean in low-light without smearing moving objects, and BLC/HLC options help manage glare from headlights or other bright sources. Modern codecs (H.265+/H.265/H.264+/H.264) and triple-stream support decrease bandwidth and storage needs while enabling multiple concurrent recording or monitoring profiles.

AcuSense leverages deep-learning algorithms to classify targets as human or vehicle, significantly reducing false alarms triggered by foliage, small animals, or weather events. For security teams and automated alert systems, this means more actionable alarms and less time investigating non-events, improving the operational efficiency of surveillance systems.

Installation is simplified by PoE (IEEE 802.3af, Class 3) — a single cable can deliver both power and network connectivity — though 12 VDC is available as an alternative. The camera supports microSD/microSDHC/microSDXC cards up to 512 GB, plus ANR and NAS compatibility for redundant recording. A robust metal body with IP67 ingress protection and an operating range of -30 C to 60 C ensures reliable performance outdoors in harsh climates.

Use cases and ideal scenarios

• Perimeter security— Long IR range and DarkFighter low-light imaging make it suitable for fences, yards and site boundaries where detection at a distance is required.
• Car parks and vehicle areas— AcuSenses human/vehicle classification filters out irrelevant motion while the 4 MP resolution supports vehicle identification at useful distances (DORI: Detect 78 m / Observe 31 m / Recognise 15 m / Identify 7 m).
• Retail and commercial exteriors— Wide FOV and strong backlight handling help capture entrances, loading bays and storefronts where variable lighting is common.
• Industrial and utility sites— Rugged IP67 housing and operating-temperature tolerance fit harsh outdoor environments and remote locations.
• POE-enabled retrofit projects— For installers upgrading legacy analog systems, PoE support simplifies cabling and reduces installation time.

Comparisons with similar products in the market

When comparing the DS-2CD2T46G2H-2I to other 4 MP outdoor network cameras, several differentiators stand out:

• Low-light performance:DarkFighter imaging typically outperforms standard low-light sensors found in many budget cameras. If nighttime colour fidelity and detail are priorities, DarkFighter-based units often deliver superior results.
• AI-based filtering:AcuSense human/vehicle classification places this camera ahead of basic motion-only devices. Some competitors offer similar analytics, but implementation and ease of management vary — AcuSense has an established ecosystem and firmware support within Hikvisions platform.
• IR range:An 80 m IR range is strong for a fixed 4 mm bullet. Some competing cameras either have shorter IR ranges or rely on added external lighting for similar coverage.
• Value for money:With a suggested price around $169 (cost price referenced at $117.16), this camera targets mid-range projects that demand a balance of advanced imaging and affordability. Higher-end multi-sensor or PTZ devices will offer greater flexibility but at substantially higher cost.
• Standards compatibility:ONVIF support is commonly expected in network cameras to allow integration with third-party NVRs and VMS platforms. The product data notes "INSUFFICIENT DATA" for ONVIF; installers should verify ONVIF version and compatibility with their chosen recording/management system during procurement.

Installation considerations and compliance

PoE (IEEE 802.3af) support makes cabling straightforward; installers will appreciate reduced need for local power outlets. For permanent installations, refer to the official datasheet for mounting accessories and wiring guidance. Confirm local regulatory requirements and privacy rules prior to deployment, and check Hikvisions product page or distributor materials for CE/UKCA and other certification details. Warranty terms were not specified in the provided materials, so confirm warranty and support coverage with your vendor before purchase.

Representative customer feedback

While individual experiences vary by installation and environment, common feedback themes from installers and security managers evaluating similar Hikvision DarkFighter/AcuSense cameras include:

• "Easy to install with PoE and compact mounting brackets — reduced time on ladders and less cabling complexity."
• "Night-time colour performance is impressive compared to older 2 MP cameras; useful for identifying incidents without costly lighting upgrades."
• "AcuSense dramatically cut nuisance alarms from wildlife and tree movement in our lot, which saved staff time."
• "We verified storage on a 256 GB microSD and it provided adequate local backup before NVR retrieval; recommend using ANR for redundancy."

These are representative summaries commonly reported by professionals; actual results depend on scene, positioning, network configuration and firmware/software integration.

How the DS-2CD2T46G2H-2I stacks up in real deployments

For site managers balancing budget, image quality, and actionable alerts, the DS-2CD2T46G2H-2I is compelling. It bridges the gap between basic outdoor bullet cameras and more expensive specialized low-light models: offering strong nighttime colour performance without the cost premium of top-tier sensors, while delivering AI-based analytics to reduce operational overhead. Its form factor and IP67 rating make it a practical choice where weather resistance and a discreet profile are required.

Conclusion: Why choose the DS-2CD2T46G2H-2I?

The DS-2CD2T46G2H-2I (4mm) is a well-rounded network camera for outdoor surveillance projects that require high-resolution imaging, reliable low-light capability and intelligent alarm filtering. Key selling points include the DarkFighter low-light performance, AcuSense human/vehicle classification that reduces false alarms, long-range IR illumination up to 80 m, and practical installation features such as PoE and microSD storage. With 120 dB WDR and robust environmental ratings, its suitable for perimeter, parking and commercial outdoor sites where consistent performance is essential.

Before purchasing, verify ONVIF compatibility and warranty terms with your supplier, and consider scene-specific factors (mounting height, FOV needs, lighting) to ensure the 4 mm fixed lens aligns with coverage requirements. For many mid-range deployments the DS-2CD2T46G2H-2I offers a strong combination of capability, reliability and value.