4 MP AcuSense Pro Bullet Camera, Motorised 2.8-4 mm, IR up to 80 m DS-2CD2T46G3-4IZY

Introduction: Meet the 4 MP AcuSense Pro Bullet Camera

Product at a glance:The DS-2CD2T46G3-4IZY is a 4 MP AcuSense Pro-Series outdoor bullet network camera with a motorised 2.8–4 mm varifocal lens. It blends DarkFighter low-light performance, long-range IR illumination, rugged IP67 metal housing and AcuSense deep-learning classification for reliable person and vehicle detection. With PoE support, H.265 compression and multiple analytic features, this camera is designed for commercial and residential perimeter surveillance where accurate detection and night-time performance matter.

Key features

• 4 MP resolution(2688 × 1520) for clear scene detail and improved identification compared with standard 2 MP cameras.
• Motorised varifocal lens (2.8–4 mm)that lets installers remotely adjust between a wider and narrower field of view without swapping lenses.
• DarkFighter low-light technologyplus IR illumination up to 60–80 m (variant dependent) for effective night-time coverage.
• AcuSense deep-learning analyticsfor person/vehicle classification, face capture and perimeter protection (line crossing, intrusion, region entrance/exit) to reduce false alarms.
• Durable buildwith IP67-rated metal housing and an operating range from −30 °C to 60 °C for outdoor deployments.
• Flexible power and storagevia PoE (IEEE 802.3af) or 12 VDC and local microSD storage up to 512 GB.

Detailed specifications and benefits

The camera uses a 1/3" progressive-scan CMOS sensor delivering 4 MP (2688 × 1520) resolution at up to 25/30 fps depending on region. The motorised varifocal lens (2.8–4 mm, F1.6) offers a horizontal field of view ranging from approximately 99.3° at 2.8 mm to 80.0° at 4 mm, giving flexibility to frame wide entrances, car parks or tighter driveways. The motorised adjustment means on-site tuning is quicker and often can be done remotely from a recorder or client software, saving installation time.

DarkFighter technology enhances sensitivity in very low light, producing usable colour images at illumination levels where ordinary cameras would switch to black-and-white or noise-dominated footage. For true zero-ambient light conditions, the camera’s IR LEDs operate at an 850 nm wavelength with a declared range up to 60 m (2I) or 80 m (4I) depending on the variant. This combination ensures long-range perimeter coverage at night with improved subject detail.

Efficient H.265/H.264 compression, including H.265+ support, reduces bandwidth and storage needs without sacrificing image clarity. Image enhancements such as 130 dB WDR (wide dynamic range), 3D DNR (digital noise reduction), BLC and HLC help preserve detail in scenes with strong backlight, glare from headlights or noisy low-light conditions. These capabilities make the camera suitable for scenes with a mix of shadow and bright light—for example, building entrances or streets with vehicle headlights.

AcuSense deep-learning analytics are the camera’s standout advantage. By classifying targets as people or vehicles, the system can filter out many common false alarms generated by animals, foliage or weather. Perimeter protection rules—line crossing, intrusion detection and region entrance/exit—are configurable and can trigger alerts or recording events. Face capture is supported to assist identity workflows when legal and privacy requirements permit.

Network connectivity uses an RJ45 port (10/100/1000 Mbps) and supports ONVIF Profiles S/G/T for integration with many third-party recorders and VMS platforms. Local storage via microSD cards (up to 512 GB) complements NAS support (NFS and SMB/CIFS) and ANR for resilience during network outages. Power flexibility—PoE IEEE 802.3af (Class 3) or 12 VDC—simplifies deployments: PoE reduces cabling and eliminates the need for separate power runs, while 12 VDC provides a fallback if PoE isn’t available.

Housed in a metal body and bracket with IP67 ingress protection, this camera is built for outdoor use, tolerating temperatures from −30 °C to 60 °C and up to 95% non-condensing humidity. Physical dimensions (88.7 × 91.2 × 287.2 mm) and a weight around 1.165 kg make it compact but robust for wall or pole mounting. Regular maintenance of seals and cable glands is advised to maintain the IP67 rating over time.

Use cases and scenarios where the camera excels

• Perimeter protection for commercial sites:The long-range IR and person/vehicle classification are ideal for factories, warehouses and logistics yards where accurate perimeter alerts reduce needless patrols and false alarms.
• Car parks and driveways:Motorised varifocal adjustment enables framing to cover multiple entry points or focus on specific lanes. WDR helps manage headlights at night and reflective surfaces.
• Residential developments and gated communities:AcuSense analytics provide a balance between privacy and security—capturing important events while lowering false alarm volumes from animals or environmental triggers.
• Retail or public-facing buildings:Face capture and high-resolution detail support investigations where identity or detailed scene review is required (subject to local privacy laws).
• Remote or poorly lit locations:DarkFighter and long-range IR extend the useful surveillance envelope where street lighting is limited.

Comparisons with similar products in the market

Compared with many 2 MP bullet cameras, the 4 MP AcuSense Pro delivers higher resolution for better identification at distance and more usable image crop potential. The combination of DarkFighter low-light, long-range IR and AcuSense analytics provides a performance and usability leap over basic models that lack advanced analytics and low-light optimisation.

Fixed-lens 4 MP cameras are usually cheaper but less flexible. The motorised 2.8–4 mm varifocal lens of the DS-2CD2T46G3-4IZY allows installers to fine-tune the field of view without changing hardware, which reduces installation time and potential returns for framing issues. For installations that require repeatable adjustments or remote reconfiguration, the motorised lens is a practical advantage.

Higher-resolution models can capture more detail but at the cost of increased bandwidth, storage and sometimes reduced low-light sensitivity for equivalent sensor sizes. The 4 MP balance often hits the sweet spot: significantly improved detail over 2 MP while keeping data and storage costs manageable. For many perimeter and parking scenarios, 4 MP is sufficient and more cost-effective.

PTZ cameras offer active tracking and wide-area coverage via pan/tilt/zoom, but they add mechanical complexity, cost and may not provide continuous wide coverage simultaneously. A network of fixed 4 MP AcuSense bullets can provide persistent coverage, analytics-triggered focused recording and easier maintenance at lower cost than multiple PTZs for the same area.

Conclusion: Why choose the DS-2CD2T46G3-4IZY?

The 4 MP AcuSense Pro bullet camera (DS-2CD2T46G3-4IZY) is a well-rounded choice for outdoor surveillance projects where accurate detection, low-light performance and deployment flexibility matter. Its combination of DarkFighter imaging, motorised varifocal optics, long-range IR and AcuSense deep-learning analytics reduces false alarms, captures actionable detail and simplifies installation. Add to that PoE convenience, ONVIF compatibility and rugged IP67 construction, and the camera suits a wide range of commercial, residential and municipal use cases.

For organisations seeking dependable perimeter protection without the bandwidth and cost overhead of ultra-high-megapixel systems, the DS-2CD2T46G3-4IZY offers a compelling balance of performance, features and value. As always, validate regulatory certifications, verify the correct IR variant for your night-range requirements, and work with qualified installers to ensure optimal placement, configuration and ongoing maintenance.