Dahua DH-HAC-B1A21P-U-IL-A 2MP Smart Dual Light Audio Bullet CCTV Camera

Specifications are based on manufacturer information for the listed model and variant. Product details may change with hardware revision.

Description

The Dahua DH-HAC-B1A21P-U-IL-A is a 2MP Smart Dual Light audio bullet CCTV camera for homes, shops and small offices. It combines 1080p video with audio recording and is intended for a compatible HDCVI surveillance system. For a buyer replacing an existing coaxial camera, the recorder and cable installation should be checked before choosing this model.

HAC-B1A21P-U-IL-A features

• 2MP resolution for Full HD 1080p surveillance.
• Smart Dual Light for adaptable night monitoring.
• Audio capability for supported recording setups.
• Bullet camera format for a fixed monitoring position.
• HDCVI system compatibility: confirm support on your recorder.

HAC-B1A21P-U-IL-A placement guide

Use the camera to monitor an entrance, shop counter, corridor or other defined area. Decide what the recording needs to show before choosing the mounting position. A wide view can show activity across a room, while a closer view is more useful when the goal is to see details at a doorway or counter.

Check the supplied lens option and the distance to the subject before installation. Keep the view clear of signs, shelves and doors that may block the scene. Test the image in daytime and after dark because reflections, nearby lighting and the direction of the camera can affect the result.

Recorder and audio compatibility

Before ordering the HAC-B1A21P-U-IL-A, check that your DVR or XVR supports the camera’s video format and resolution. An available connector does not by itself confirm full compatibility. Ask the installer to verify the recorder settings and the supported recording mode for the channel you intend to use.

Audio recording also depends on the recorder and its configuration. Confirm that audio from this camera can be received, recorded and played back on your selected channel. If sound is important to your installation, test a short recording and playback instead of relying only on the live picture.

Planning night monitoring

The Smart Dual Light feature is relevant when lighting conditions change between daytime and nighttime. For the HAC-B1A21P-U-IL-A, confirm the available illumination settings and how they work with your recorder before deployment. Choose the settings to suit the scene and the people using the space.

Avoid aiming directly at reflective glass or placing an obstruction close to the front of the camera. These conditions can make night images harder to interpret. Check the final view with the normal lights switched on and off, then adjust the angle before permanently securing the mounting hardware.

Installation checklist

• Confirm the exact model suffix and lens supplied with the order.
• Check recorder support for video resolution and audio.
• Inspect existing coaxial cable, connectors and power wiring.
• Confirm the required power supply with the product documentation.
• Check the mounting surface and protect cable connections appropriately.
• Test live view, recording, playback and night visibility.

The HAC-B1A21P-U-IL-A should be selected as part of a complete system. Camera count, recording schedule and storage capacity affect how much footage the recorder can retain. Plan those requirements together so that the installation meets your intended monitoring needs.

Product information and related cameras

Review the Dahua product-family resource and confirm the exact regional variant before ordering. Family-level information may cover more than one version, so use the supplied model and specification sheet when checking a particular feature.

Compare other CCTV cameras or explore the security and surveillance range at Logic Gate. For current pricing and availability in Bangladesh, use the price shown on this product page and confirm package contents, warranty terms and installation requirements before purchase.

HAC-B1A21P-U-IL-A price in Bangladesh and common questions

How do I check the current price?

Check the live selling price and stock status displayed on this page. Confirm the exact model, included accessories and invoice warranty before placing your order with Logic Gate Technology.

What does Smart Dual Light need?

The camera has infrared and warm illumination options. Automatic event-linked light switching depends on compatible recorder support and configuration. Confirm the supported settings with your XVR, and test both recorded audio and nighttime playback during setup.

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