DH-HAC-B1A21P-U-IL-A is a 2MP Smart Dual Light HDCVI fixed-focal bullet camera built for people who want full-color night footage combined with active deterrence. Made by Dahua, this camera belongs to the Cooper Series and is well suited for homes, small businesses, and entrances that need clear, colored surveillance day and night.
At the core of DH-HAC-B1A21P-U-IL-A is its 2MP resolution, capturing sharp 1080P footage at up to 30fps. This ensures faces and important details stay clear whether the camera is recording during the day or after dark, rather than dropping to a lower-quality mode at night.
Smart Dual Light is where DH-HAC-B1A21P-U-IL-A truly stands out. The camera automatically turns on its white light when the Perimeter Protection or SMD Plus function on an AI-enabled XVR detects a target in the rule area, capturing clear, vivid, full-color images, then switches back to IR light once the target leaves, significantly reducing light pollution compared to always-on floodlights.
Illumination range is another strong point. DH-HAC-B1A21P-U-IL-A offers a 30-meter smart IR distance alongside a 20-meter warm light range, giving installers genuine flexibility to capture usable footage across a range of low-light conditions.
Audio capability adds real value too. DH-HAC-B1A21P-U-IL-A includes a built-in microphone, supporting broadcast-quality audio transmitted directly over the coaxial cable, so users can capture both video and sound without running a separate audio cable.
Format flexibility rounds out the hardware nicely. The camera supports CVI, CVBS, AHD, and TVI switchable formats, giving installers genuine freedom to pair it with a wide range of existing DVR systems without needing to overhaul the whole setup.
Durability is central to this camera’s design. With an IP67 weatherproof rating, DH-HAC-B1A21P-U-IL-A performs reliably through rain, dust, and harsh outdoor conditions without any drop in image quality or connectivity.
Image quality features add further polish. DH-HAC-B1A21P-U-IL-A includes advanced 2D noise reduction technology, along with a 3.6mm fixed-focal lens, keeping footage clean and well-exposed across a variety of lighting scenarios.
Whether securing a home entrance or a small storefront, DH-HAC-B1A21P-U-IL-A delivers vivid full-color clarity, Smart Dual Light deterrence, and built-in audio in one compact HDCVI bullet camera.
Full technical specifications are listed below.
DH-HAC-B1A21P-U-IL-A CAMERA & LENS SPECIFICATIONS
| Feature | Specification |
| Device Model | DH-HAC-B1A21P-U-IL-A |
| Image Sensor | 2 MP CMOS |
| Max. Resolution | 1920 (H) × 1080 (V) [1080p] |
| Scanning System | Progressive |
| Electronic Shutter Speed | PAL: 1/25 s–1/100,000 s |
| Min. Illumination | 0.02 lux@F2.0 (Color, 30 IRE); 0.002 lux@F2.0 (B/W, 30 IRE); 0 lux (Illuminator on) |
| S/N Ratio | >65 dB |
| Illumination Distance | IR: 30 m (98.43 ft) |
| Illuminator Control | Auto / Manual (2 Warm light LEDs, 2 IR LEDs) |
| Angle Adjustment | Pan: 0°–360° |
| Lens Type / Mount | Fixed-focal / M12 (Max Aperture: F2.0, Fixed Iris) |
| Focal Length & FOV |
2.8 mm: H: 100°, V: 54°, D: 117° 3.6 mm: H: 80°, V: 43°, D: 94° 6 mm: H: 43°, V: 24°, D: 50° |
| Close Focus Distance | 2.8 mm: 0.5 m |
DH-HAC-B1A21P-U-IL-A DORI DISTANCE
| Lens | Detect | Observe | Recognize | Identify |
| 2.8 mm | 44.7 m (146.65 ft) | 17.9 m (58.73 ft) | 8.9 m (29.20 ft) | 4.5 m (14.76 ft) |
| 3.6 mm | 55.0 m (180.45 ft) | 22.0 m (72.18 ft) | 11.0 m (36.09 ft) | 5.5 m (18.04 ft) |
| 6 mm | 102.9 m (337.60 ft) | 41.1 m (134.84 ft) | 20.6 m (67.59 ft) | 10.3 m (33.79 ft) |
DH-HAC-B1A21P-U-IL-A VIDEO & AUDIO FEATURES
| Feature | Specification |
| Frame Rate | CVI/AHD/TVI: 1080p@25/30 fps |
| Day/Night | Auto (ICR) / Color / B/W |
| Image Enhancement | BLC, HLC, DWDR, 2D NR, Mirror Function |
| White Balance / Gain | Auto, Area White Balance / Auto, Manual |
| Illumination Modes | Smart IR&WL; WL Mode; IR Mode |
| Privacy Masking | On/Off (8 areas, rectangle) |
| Audio Input | One channel built-in Mic |
DH-HAC-B1A21P-U-IL-A PORTS & POWER SPECIFICATIONS
| Feature | Specification |
| Video Output | CVI/TVI/AHD/CVBS video output choices via 1 BNC port |
| Audio Output / Mic | Coaxial Audio via Built-in Mic |
| Power Supply | 12 VDC ± 30% |
| Power Consumption | Max 3.3 W (12 VDC, LED on) |
DH-HAC-B1A21P-U-IL-A ENVIRONMENT & STRUCTURE
| Feature | Specification |
| Operating Temperature | –40 °C to +60 °C (–40 °F to +140 °F) |
| Operating Humidity | <95% (RH), non-condensing |
| Ingress Protection | IP67 (Basic Protection Anti-corrosion) |
| Casing Material | Plastic |
| Product Dimensions | 146.1 mm × 70.0 mm × 69.8 mm (5.75″ × 2.76″ × 2.75″) |
| Net / Gross Weight | 0.15 kg / 0.23 kg |
| Installation Options | Wall mount; ceiling mount; vertical pole mount |
| Certifications | CE-LVD: EN 62368-1; CE-EMC: EN 55032, EN 55035 |
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