Dahua HAC-B1A51-U-IL 5MP Smart Dual Light HDCVI Bullet Camera

The Dahua HAC-B1A51-U-IL is a 5MP Smart Dual Light HDCVI fixed-focal bullet camera designed for reliable video surveillance in residential, commercial and professional security environments. It combines high-resolution 5MP imaging with dual illumination technology, built-in audio and multi-format video support, making it a practical choice for CCTV systems that require clear video during both daytime and nighttime conditions.

The camera provides a maximum resolution of 2880 × 1620 pixels, allowing it to capture more image detail than standard 1080P cameras. This makes the Dahua HAC-B1A51-U-IL suitable for monitoring entrances, shops, offices, warehouses, homes, commercial properties and other areas where clear surveillance footage is required.

5MP High-Resolution Imaging

The camera uses a 5MP CMOS image sensor and supports a maximum resolution of 2880 × 1620. The 16:9 video format provides a modern widescreen surveillance image suitable for compatible HDCVI recording systems.

The additional resolution provided by 5MP imaging can help capture useful visual details across the monitored area. Actual image quality will depend on lighting conditions, camera positioning, lens selection, cable quality and the connected DVR/XVR.

Smart Dual Light Technology

A key feature of the Dahua HAC-B1A51-U-IL is Smart Dual Light technology. The camera combines infrared and warm-light illumination to improve visibility when ambient lighting becomes insufficient.

The camera provides up to 30 meters of IR illumination and up to 20 meters of warm-light illumination. This dual illumination system gives the camera greater flexibility for nighttime surveillance and allows it to operate effectively across different lighting conditions.

Smart Dual Light can be particularly useful for entrances, gates, shops, outdoor areas, residential properties and commercial locations where nighttime visibility is important.

30m Infrared Illumination

The camera provides an IR illumination distance of up to 30 meters. This helps extend nighttime monitoring beyond the immediate area surrounding the camera.

The actual effective distance can vary depending on environmental conditions, reflective surfaces, obstacles and installation position. For the best results, the camera should be positioned carefully according to the required surveillance area.

20m Warm Light

The built-in warm-light illumination provides up to 20 meters of illumination. Warm light can help provide color information in suitable nighttime conditions, offering an alternative to traditional infrared-only surveillance.

This feature can be useful when monitoring areas where identifying colors or additional scene details may be important after dark.

Fixed-Focal Lens

The HAC-B1A51-U-IL uses a fixed-focal lens design. Dahua lists a 3.6mm fixed lens, with 2.8mm and 6mm options available depending on the configuration.

Different focal lengths provide different fields of view, so the appropriate version should be selected according to the installation environment and required coverage area.

Built-in Microphone

The camera includes a built-in microphone, providing audio capture capability for compatible surveillance systems.

Audio can add useful context to video surveillance in suitable applications such as offices, shops, entrances and other areas. Audio functionality should always be used according to applicable laws, regulations and site requirements.

Multiple Video Technologies

The Dahua HAC-B1A51-U-IL supports multiple video technologies, including CVI, CVBS, AHD and TVI. This allows the camera to work with compatible DVR and XVR systems using different analog HD video standards.

Multi-format support can be especially useful when upgrading an existing CCTV installation because users can select the compatible video technology according to their recorder and system configuration.

Outdoor IP67 Protection

The camera features an IP67 protection rating, making it suitable for many outdoor surveillance applications. The rating provides protection against dust ingress and water exposure under the conditions defined by the IP67 standard.

For outdoor installation, proper mounting, cable protection and sealing should still be used to maintain the intended protection level and ensure reliable long-term operation.

Practical Bullet Camera Design

The bullet form factor provides a directional surveillance design suitable for walls, ceilings and other compatible mounting locations. The camera can be positioned toward entrances, pathways, outdoor areas and other locations that require focused monitoring.

Its compact design makes it suitable for both residential and commercial CCTV installations.

Suitable Applications

The Dahua HAC-B1A51-U-IL 5MP Smart Dual Light HDCVI Bullet Camera can be used for homes, offices, retail shops, warehouses, commercial buildings, entrances, gates, parking areas, residential compounds and other surveillance locations.

It is particularly suitable for installations where users require 5MP image resolution together with nighttime illumination and compatibility with HDCVI-based CCTV recording systems.

Technical Specifications

The Dahua HAC-B1A51-U-IL features a 5MP CMOS image sensor with a maximum resolution of 2880 × 1620 pixels. It supports Smart Dual Light illumination with up to 30m IR distance and up to 20m warm-light distance. The camera uses a fixed-focal lens with 3.6mm as the standard listed lens, while 2.8mm and 6mm options are also available. It includes a built-in microphone and supports CVI, CVBS, AHD and TVI video technologies. The camera is rated IP67 and uses 12V DC power.

Conclusion

The Dahua HAC-B1A51-U-IL 5MP Smart Dual Light HDCVI Bullet Camera is a practical surveillance solution for users who need high-definition 5MP video, flexible nighttime illumination and compatibility with multiple analog HD video technologies. Its Smart Dual Light system combines up to 30m infrared illumination with up to 20m warm light, while the built-in microphone adds audio capability to compatible surveillance installations.

With its fixed-focal bullet design, IP67 protection, multi-format video support and 5MP resolution, the Dahua HAC-B1A51-U-IL can be used across a wide range of residential, commercial and outdoor CCTV applications.

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