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Dahua HAC-B1A21P-U-IL-A 2MP Smart Dual Light HDCVI Bullet Camera
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CCTV Systems

Dahua HAC-B1A21P-U-IL-A 2MP Smart Dual Light HDCVI Bullet

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৳1,600
Availability: In stock

Key features

  • 2MP Full HD 1080p
  • resolution 3.6mm fixed
  • lens Smart Dual Light technology
  • Up to 30m illumination distance
  • Built-in microphone CVI/CVBS/AHD/TVI switchable output
  • IP67 weatherproof design 12V DC power input
  • Suitable for outdoor use
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Product details & insights

Product details

Dahua HAC-B1A21P-U-IL-A 2MP Smart Dual Light HDCVI Bullet Camera is a reliable surveillance solution for homes, shops, offices, warehouses, parking areas, and other security applications. It uses a 2MP CMOS image sensor with Full HD 1920 × 1080 resolution and supports up to 30fps at 1080p, helping deliver clear and stable video for everyday monitoring.

This camera is equipped with Smart Dual Light technology, combining IR and warm light to improve visibility in low-light and night conditions. With up to 30 meters of illumination distance, it is suitable for entrances, boundary walls, driveways, shop fronts, and open outdoor areas.

The built-in microphone allows audio capture together with video footage, adding more useful context to security recordings. The camera also supports CVI, CVBS, AHD, and TVI switchable output, making it easier to integrate with a wide range of DVR systems.

Its IP67-rated housing and 12V DC power input make it a practical choice for indoor and outdoor use in challenging weather conditions.

Specifications

BrandDahua
ModelHAC-B1A21P-U-IL-A
Camera TypeHDCVI Bullet Camera
UsageIndoor & Outdoor
Image Sensor2MP CMOS
Resolution1920 × 1080 Full HD
Frame RateMax 30fps @ 1080p
Lens3.6mm Fixed Lens
Optional Lens2.8mm, 6mm
Illumination TypeSmart Dual Light
Illumination DistanceUp to 30m
AudioBuilt-in Microphone
Video OutputCVI/TVI/AHD/CVBS by one BNC port
Day/NightAuto (ICR) / Color / B/W
WDRDWDR
Noise Reduction2D NR
Power Supply12V DC ±30%
ProtectionIP67
Warranty1 Year

Frequently asked questions

Yes, with 2MP 1080p resolution, Smart Dual Light, built-in mic, and IP67 protection, it can be a good entry-level choice for home gates, small shops, corridors, or entrance monitoring.
The IR 30m range helps provide black-and-white night vision in low light, while the warm light 20m range can provide color view in nearby areas. For larger spaces, extra lighting or a higher-range camera may be needed.
The Super Adapt feature helps adjust the image in different lighting conditions, making video look more balanced in indoor-outdoor mixed lighting or entrance areas.
This model usually has a metal front cover, plastic rear barrel, and metal bracket. This keeps the camera lightweight while offering practical durability for normal indoor or outdoor installation.
A 2.8mm lens gives a wider view, suitable for rooms or shop fronts. A 3.6mm lens is better for focused areas like gates or corridors. A 6mm lens can help monitor a specific point from a longer distance.
Yes, it can be installed using LAN/UTP cable, but compatible video baluns are required for HDCVI signal transmission. For best results, cable quality and correct connection polarity are important.
To use the built-in mic, the DVR/XVR must support audio recording or audio-over-coax, and the channel audio setting should be enabled. Not all DVR models support audio, so compatibility should be checked.
Yes, the 3.6mm lens option can be suitable for narrow alleys, walkways, corridors, or gate monitoring. If wider coverage is needed, the 2.8mm lens option is better.
This model supports switchable video output. Depending on DVR compatibility, CVI, TVI, AHD, or CVBS mode should be selected. A wrong mode may cause no display or image issues.
The most common mistakes are using a low-quality adapter, leaving BNC/power connectors exposed, selecting the wrong video mode, or not enabling DVR audio settings. These can cause unstable video or audio.

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