Dahua HAC-T1A21P-U-IL-A 2MP Smart Dual Light HDCVI Eyeball CC Camera is a high-performance Full HD 1080P analog security camera designed to provide clear, reliable, and intelligent surveillance for homes, offices, shops, warehouses, schools, banks, restaurants, factories, and other commercial spaces. Built with Dahua Smart Dual Light Technology, this camera combines infrared (IR) LEDs and warm white LEDs to deliver excellent image quality both during the day and at night.

Unlike traditional CCTV cameras that show only black-and-white images at night, the Smart Dual Light feature intelligently switches between IR night vision and full-color warm light mode. Under normal conditions, the camera uses infrared LEDs to monitor the area discreetly. When a person or moving object is detected, the warm white light automatically turns on, allowing the camera to capture full-color images, making it easier to identify faces, clothing, vehicles, and other important details.

The camera is equipped with a 2MP Progressive CMOS image sensor capable of recording 1920 × 1080 Full HD video, providing sharp and detailed footage. Its fixed-focal lens (available in 2.8 mm or 3.6 mm) offers a wide viewing angle suitable for monitoring entrances, parking areas, corridors, shops, and open spaces.

Designed for easy installation, the camera supports HDCVI technology, enabling high-definition video transmission over existing coaxial cables. This makes it an excellent upgrade for older analog CCTV systems without replacing the entire wiring infrastructure. It also supports multiple video output formats including HDCVI, AHD, TVI, and CVBS, ensuring compatibility with many DVR systems.

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Product Description & Specification

Crystal Clear Full HD 1080P Video

The Dahua HAC-T1A21P-U-IL-A captures video at 1920 × 1080 (2 Megapixels) resolution, producing clear and detailed images for everyday surveillance.

Whether monitoring a home entrance or a retail store, Full HD recording helps identify:

• Faces
• Vehicles
• License plates (within practical distance)
• Clothing
• Suspicious activities
• Visitor movements

The camera uses a 2MP Progressive CMOS Sensor, providing stable and smooth video with natural colors during daylight.

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Smart Dual Light Technology

One of the biggest advantages of this model is its Smart Dual Light system.

Traditional cameras generally provide:

• Daytime color images
• Black-and-white night images

The Dahua Smart Dual Light system improves nighttime surveillance.

How It Works

Normal Night

• Infrared LEDs remain ON.
• Camera records in black and white.
• Energy consumption remains low.

When Motion Is Detected

• Warm white LEDs automatically turn ON.
• Camera switches to full-color recording.
• Better identification of people and objects.

After the target leaves, the camera automatically returns to infrared mode. This intelligent switching helps reduce unnecessary light pollution while preserving image detail when it matters most.

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Excellent Night Vision

The camera provides dependable monitoring after dark with:

• IR illumination distance: Up to 25 meters
• Warm light illumination distance: Up to 20 meters

This allows reliable surveillance in:

• Shops
• Garages
• Residential entrances
• Warehouses
• Parking areas
• Office buildings
• Small factories

The illuminators can be configured in Auto or Manual mode.

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High-Quality Fixed Lens

The camera is available with:

• 2.8 mm fixed lens
• 3.6 mm fixed lens

2.8 mm Lens

Approximate field of view:

• Horizontal: 100°
• Vertical: 54°
• Diagonal: 117°

Ideal for:

• Living rooms
• Shops
• Reception areas
• Parking entrances
• Warehouses

3.6 mm Lens

Provides a narrower field of view for longer-distance observation.

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Smart Image Processing

The HAC-T1A21P-U-IL-A includes several image enhancement technologies:

2D Digital Noise Reduction (2D DNR)

Helps reduce image noise in low-light conditions, producing cleaner and sharper video.

DWDR (Digital Wide Dynamic Range)

Improves visibility in scenes with both bright and dark areas, such as entrances with strong sunlight.

Automatic White Balance

Maintains natural colors in different lighting conditions.

Automatic Gain Control

Adjusts image brightness automatically when lighting changes.

These technologies work together to deliver better image quality throughout the day.

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HDCVI Technology

The camera uses HDCVI (High Definition Composite Video Interface) technology.

Benefits include:

• Long-distance HD transmission
• Stable video signal
• Easy installation
• Low latency
• Cost-effective upgrades

It is ideal for replacing older analog cameras while keeping the existing coaxial cable infrastructure.

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Multiple Video Formats

The camera supports:

• HDCVI
• AHD
• TVI
• CVBS

This multi-format compatibility allows it to work with many DVR brands and simplifies upgrades of existing CCTV systems.

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Flexible Installation

The eyeball design supports:

• Ceiling mounting
• Wall mounting

Adjustable angles:

• Pan: 0°–360°
• Tilt: 0°–78°
• Rotation: 0°–360°

This makes installation simple in almost any location.

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Compact and Lightweight Design

The camera has a compact plastic housing suitable for indoor and sheltered outdoor use.

• Product Dimensions: Φ85 × 77.1 mm
• Net Weight: 0.11 kg
• Gross Weight: 0.12 kg

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Technical Specifications