HAC-B2A21-U - The bullet camera with 2.8mm fixed lens is a reliable solution for Full HD outdoor video surveillance , thanks to the 2MP CMOS sensor that offers sharp and detailed images. 4-in-1 technology ensures compatibility with HDCVI, HDTVI, AHD and CVBS systems, while the Smart IR up to 30 meters , the ICR Day/Night filter and Digital WDR guarantee high performance even in low light conditions. The robust metal body , IP67 protection and 3-axis support make this camera ideal for professional installations in any outdoor environment. Dahua
HAC-B2A21-U | 2MP HDCVI BULLET CAMERA FIXED LENS 2.8mm - SMART IR

The Dahua HAC-B2A21-U bullet camera with 2.8 mm fixed lens is designed to ensure reliable video surveillance in outdoor environments, offering Full HD 2MP images with a wide 100° viewing angle. 4-in-1 technology ensures compatibility with HDCVI, HDTVI, AHD and CVBS systems, while the Smart IR up to 30 meters , the ICR Day/Night filter and Digital WDR guarantee clear images both day and night. The robust metal body , IP67 protection and 3-axis support complete a resistant and versatile professional solution.
Main specifications:
- Resolution: Full HD 2MP (1920×1080)
- Lens: 2.8mm fixed with 100° viewing angle
- Night Vision: Smart IR up to 30m
- Technology: 4 in 1 (HDCVI, HDTVI, AHD, CVBS)
- Video functions: Digital WDR, 2D-NR, ICR Day/Night
- Protection: IP67 with metal body
- Installation: 3-axis support for precise orientation
Further details
Technical data sheet
| HAC-B2A21-U |
| Technical features |
| 2 megapixel CMOS sensor |
| Digital resolution: 1080P (1920x1080), 960H (960x576, 960x480) |
| Frames per second: 25/30 fps @1080P (CVI/TVI/AHD) |
| 4-in-1 switchable output |
| Day/Night mode with removable mechanical filter (ICR) |
| 0.02 lux F2.0 (color) / 0.002 lux F2.0 (B/W) / 0 lux IR On |
| Smart IR: 2 IR LEDs, 30 meters |
| 2.8 mm fixed optics |
| Angle of view: 100°(H), 54°(V), 117°(D) |
| Imaging modes: BLC, digital WDR, 2D-NR |
| Auto white balance |
| Auto gain control |
| Power supply: 12V DC (±30%) |
| Power consumption: 2.8W (max.) |
| Storage temperatures -40°C ~ +60°C (-40°C ~ +60°C) |
| Operating temperature -40°C ~ +60°C (-40°C ~ +60°C) |
| Relative humidity: <95% (non-condensing) |
| IP67 degree of protection |
| Plastic housing |
| Dimensions: 70 (W) x 69.8 (H) x 146.1 mm |
| Net weight: 270 g |
| Gross weight: 330 g |
| 3AXIS: 0°~360°(PAN), 0°~90°(TILT), 0°~360°(Rotation) |


