Features:

1. Resolution: Provides 2 Megapixel (1920×1080) high-definition resolution for clear and detailed video footage.
2. Technology: Uses HDCVI (High Definition Composite Video Interface) technology, which transmits HD video over coaxial cables, offering high-quality images over long distances.
3. Lens: Fixed-focal lens (typically around 3.6mm), offering a wide-angle view suitable for general surveillance purposes.
4. IR LEDs: Built-in infrared LEDs for night vision capabilities, providing visibility in low-light or complete darkness (typically up to a certain distance, such as 30 meters).
5. Weatherproof: Designed to be weatherproof (IP67 rated), allowing for reliable outdoor use in various weather conditions.
6. Smart IR: Smart Infrared technology adjusts the intensity of the infrared LEDs to prevent overexposure of close objects in low-light conditions.
7. Wide Dynamic Range (WDR): Enhances image quality in challenging lighting conditions by compensating for shadows and highlights.
8. Day/Night Functionality: Automatic switching between color during the day and black-and-white in low-light conditions using infrared LEDs.
9. Durable Construction: Typically made of metal or durable materials to withstand vandalism and harsh environments.

Functions:

1. Video Surveillance: Captures high-definition video footage for monitoring and surveillance purposes.
2. Motion Detection: Supports motion detection functionality, triggering alerts or recording when motion is detected within the camera’s field of view.
3. Remote Access: Can be integrated into network video recording (NVR) systems for remote viewing and playback of recorded footage.
4. Privacy Masking: Allows users to block out specific areas within the camera’s field of view for privacy reasons.
5. Digital Noise Reduction: 2D-DNR (Digital Noise Reduction) technology helps to reduce noise in low-light conditions, improving image clarity.

Benefits and Advantages:

1. High Definition: Provides clear and detailed video footage, essential for identifying individuals and objects.
2. Night Vision: IR LEDs and Smart IR technology ensure visibility in low-light conditions, extending surveillance capabilities around the clock.
3. Weatherproof Design: Suitable for outdoor use, offering durability and reliability in various weather conditions.
4. Cost-effective: Uses HDCVI technology, allowing for high-definition video transmission over existing coaxial cables, which can reduce installation costs.
5. Easy Installation: Typically designed for straightforward installation and setup, minimizing deployment time and effort.
6. Versatility: Suitable for a wide range of applications including residential, commercial, industrial, and public sector surveillance needs.

Applications:

• Residential Security: Provides monitoring and security for homes, driveways, and outdoor areas.
• Commercial Surveillance: Used in retail stores, offices, and warehouses for theft prevention, employee monitoring, and general security.
• Industrial Facilities: Monitors manufacturing plants, warehouses, and industrial sites for operational security and safety.
• Public Sector: Deployed in government buildings, parks, and public spaces for monitoring and safety purposes.
• Transportation: Used in airports, train stations, and bus terminals for surveillance of passengers and security monitoring.

In summary, the Dahua 2MP HDCVI IR Bullet Camera DH-HAC-B2A21 offers high-definition video quality, night vision capabilities, weatherproof design, and durability, making it suitable for a wide range of indoor and outdoor surveillance applications. Its features ensure reliable performance and effective monitoring, enhancing overall security and situational awareness in diverse environments.