Hikvision DS-2CD2047G3-LI2UY | 4MP Smart Hybrid Light ColorVu Bullet | 2.8mm Lens, Mic & Anti-Corrosion

FAQs

Why choose 4MP over 8MP resolution?

The 4MP DS-2CD2047G3-LI2UY offers several practical advantages over 8MP alternatives. It requires approximately 50% less bandwidth and storage space, allowing longer retention periods or accommodating more cameras on existing infrastructure. The lower pixel count also delivers better low light sensitivity at 0.0001 Lux (versus 0.0005 Lux for 8MP), producing cleaner images in darkness. For applications prioritizing wide-area detection and observation rather than fine identification at distance, 4MP provides an optimal balance of image quality, system efficiency, and cost-effectiveness.

What makes the 2.8mm lens with 111.1° coverage particularly useful?

The 2.8mm lens on the 4MP model provides an ultra-wide 111.1° horizontal field of view, even broader than the 8MP version’s 108.8°. This exceptional coverage allows a single camera to monitor expansive areas like large car parks, warehouse floors, building entrances, or reception areas where comprehensive situational awareness takes priority over distant detail. The wider angle means fewer cameras are needed to cover large open spaces, reducing installation costs, simplifying cabling, and lowering ongoing maintenance requirements whilst maintaining complete scene visibility.

How does the enhanced 0.0001 Lux sensitivity improve performance?

The DS-2CD2047G3-LI2UY achieves 0.0001 Lux minimum illumination, making it twice as sensitive to available light as the 8MP equivalent at 0.0005 Lux. This enhanced sensitivity means the camera captures cleaner, more detailed colour images in extremely dark conditions with less digital noise. The larger individual pixels in the 4MP sensor gather more light per pixel compared to cramming 8 megapixels onto the same 1/1.8″ sensor size. This makes it particularly effective for poorly lit environments where maximizing available light is critical.

What are DORI distances and how do they differ from the 8MP model?

DORI distances define effective ranges for Detection, Observation, Recognition, and Identification tasks. For the 4MP 2.8mm model: Detection (61m) identifies that something is present; Observation (24m) determines basic characteristics; Recognition (12m) recognizes previously seen subjects; Identification (6m) enables definitive identification. These distances are shorter than the 8MP version (89m/35m/17m/8m) due to lower pixel density, but remain entirely adequate for wide-area monitoring applications where the camera’s purpose is comprehensive coverage rather than long-distance identification.

How much bandwidth and storage does 4MP save compared to 8MP?

The 4MP model’s maximum bit rate of 8 Mbps versus 16 Mbps for 8MP translates to approximately 50% bandwidth reduction, significantly easing network infrastructure demands. Storage requirements follow similarly – a 30-day recording at 4MP might require 1TB where the same 8MP footage needs 2TB. This efficiency allows longer retention periods, more cameras on existing systems, or reduces storage infrastructure costs. When combined with H.265+ compression, the savings become even more substantial whilst maintaining excellent image quality for most professional surveillance applications.

Does the camera work in coastal or industrial environments?

Yes, the DS-2CD2047G3-LI2UY carries NEMA4X anti-corrosion certification, qualifying it at Hikvision’s “moderate protection” level. This makes it suitable for coastal locations approximately 2 kilometres from coastlines, regions experiencing acid rain, and light to moderate industrial environments. The specially treated all-metal housing resists oxidation and chemical degradation better than standard cameras. For direct coastline installations, docks, or heavy chemical/industrial facilities, Hikvision offers top-level protection models engineered specifically for extreme corrosive conditions.

Can this camera integrate with existing non-Hikvision systems?

Absolutely. The camera is ONVIF Profile S, G, and T compliant, ensuring compatibility with third-party video management systems and network video recorders supporting these industry standards. It also supports standard protocols like RTSP for video streaming, allowing integration with diverse recording platforms. The camera includes built-in edge recording to microSD card (up to 512GB), providing backup recording capability independent of any network recorder. This flexibility makes it suitable for both Hikvision-native systems and mixed-manufacturer installations requiring standards-based interoperability.

What’s the difference between the DS-2CD2047G3-LI2UY and DS-2CD2047G3-LIY models?

The critical difference lies in the “2U” designation. The DS-2CD2047G3-LI2UY includes an arrayed dual-microphone system for audio monitoring with environmental noise filtering, whilst the DS-2CD2047G3-LIY model without “2U” lacks built-in microphones. All other specifications – including ColorVu 3.0, Smart Hybrid Light, AcuSense AI, video performance, and environmental ratings – remain identical between the models. Select the 2U version if audio monitoring, two-way communication, or audio-triggered alerts are required for your security application.

How does lower resolution benefit storage and network infrastructure?

The 4MP resolution provides substantial infrastructure benefits without compromising security effectiveness for wide-area monitoring. Network switches and cabling can support more cameras per port or trunk, reducing upgrade costs. Existing VMS servers can handle additional camera streams. Recording storage extends approximately twice as long, or alternatively, the same storage budget accommodates roughly double the camera count. For projects with limited bandwidth, legacy network infrastructure, or cost-sensitive deployments, 4MP delivers professional surveillance quality whilst optimizing system resources and total cost of ownership.