Description
DH-A81AJ22
Experience the superior clarity of
Dahua’s Ultra 4K HDCVI
cameras for vast coverage and superior image details. Dahua Ultra 4K HDCVI series leverages existing coax infrastructures to deliver forensic-level images seamlessly and over long distances. The 4K HDCVI camera offers multiple output formats that are easily switchable. The camera is suitable for most applications, offering True Wide Dynamic Range for difficult lighting conditions, input voltage tolerance for inconsistent power supplies, and IP67 certification for operation in harsh outdoor environmental conditions
1/2.7-in. 8 MP Progressive-scan CMOS Sensor
3840 x 2160 at 15 fps Maximum Resolution
2.8 mm Fixed Lens
True Wide Dynamic Range (120 dB) and 2D/3D Noise Reduction
HDCVI, AHD, TVI, or CVBS Output, Switchable
Maximum IR Length 30 m (98.43 ft), Smart IR
IP67 Ingress Protection
Five-year Warranty (applies to products sold through an authorized Dahua Dealer)
Become a registered dealer of Dahua
Call 1-800-878-6604 for Dealer Prices!
Technical Specifications
Camera
Image Sensor
1/2.7-in. CMOS Sensor
Effective Pixels
3840 (H) x 2160 (V), 8 MP
Scanning System
Progressive
Electronic Shutter Speed
1/3 s to 1/100,000 s
Minimum Illumination
Color: 0.03 lux at F2.0, 30 IRE
0 lux with IR on
S/N Ratio
More than 65 dB
IR Distance
Up to 30.0 m (98.43 ft)
IR On/Off Control
Auto, Manual
IR LEDs
One (1)
Lens
Lens Type
Fixed-focal
Mount Type
M12
Focal Length
2.8 mm
Maximum Aperture
F2.0
Angle of View
Horizontal: 105°
Vertical: 56°
Diagonal: 125°
Iris Type
Fixed
Close Focus Distance
1000.0 mm (3.28 ft)
DORI Distances¹
Detect (8 ppf)
75 m (246 ft)
Observe (19 ppf)
30 m (98 ft)
Recognize (38 ppf)
15 m (49 ft)
Identify (76 ppf)
8 m (26 ft)
Pan/Tilt/Rotation
Range
Pan: 0° to 360°
Tilt: 0° to 78°
Rotation: 0° to 360°
Video
Resolution Output
8 MP (3840 x 2160), 6MP (2880×1920), 5 MP (2880 x 1620), 4 MP (2560 x 1440),1080P (1920 x 1080), 720P (1280×720), 960 H (960 × 480), D1 (704×480), CIF (352×240)
Frame Rate
HDCVI: 8 MP at 15 fps; 5 MP at 20 fps; 4 MP at 30 fps
TVI:
8 MP at 15 fps; 5 MP at 20 fps; 4 MP at 30 fps
ADH:
8 MP at 15 fps; 5 MP at 20 fps; 4 MP at 30 fps
CVBS: NTSC
Video Output
One (1) BNC Output, HDCVI, AHD, TVI, CVBS switchable
Video Transmission³
RG-59/U Coax: 720p: 800 m (2624.67 ft), 1080p: 500 m (1640.42 ft), 4K: 500 m (1640.42 ft)
RG-6/U Coax: 720p: 1200 m (3937.01 ft), 1080p: 800 m (2624.67 ft), 700 m (2296.59 ft)
CAT 6 UTP: 720p: 450 m (1476.38 ft), 1080p: 300 m (984.25 ft), 4K: 300 m (984.25 ft)
Day/Night
Auto (ICR)
OSD Menu
Multi-language
BLC Mode
BLC, HLC, True WDR
WDR
120 dB
Gain Control
AGC
Noise Reduction
2D, 3D
White Balance
Auto, Manual
Advanced Features
Smart IR, Electronic Defog
Certifications
CE
EN55032; EN55024; EN50130-4
Safety
UL60950-1; CAN/CSA C22.2 No.60950-1
Electromagnetic Compatibility (EMC)
CFR 47 FCC Part 15 subpart B
ANSI C63.4-2014
Electrical
Power Supply
12 VDC ±30%
Power Consumption
Maximum 5.2 W (12 VDC, IR on)
Environmental
Operating Conditions
–30° C to +60° C (–22° F to +140° F),
Less than 95% RH, non-condensing
Initiate startup above –30° C (–22° F)
Storage Conditions
–30° C to +60° C (–22° F to +140° F),
Less than 95% RH, non-condensing
Ingress Protection
IP67
Construction
Casing
Metal
Dimensions
ø94.0 mm x 85.60 mm
(ø3.70 in. x 3.37 in.)
Net Weight
0.31 kg (0.68 lb)
Gross Weight
0.44 kg (0.97 lb)
1. The DORI distance is a measure of the general proximity for a specific classification to help pinpoint the right camera for your needs. The DORI distance is calculated based on sensor specifications and lab test results according to EN 62676-4 , the standard that defines the criteria for the Detect, Observe, Recognize and Identify classifications. 2. Transmission distance results verified by real-scene testing in Dahua’s test laboratory. Actual transmission distances may vary due to external influences, cable quality, and wiring structures.
Downloads
Data Sheet
Installation Guide
Functions:
Long Distance Transmission
HDCVI technology guarantees real-time transmission over long distances without loss of video quality. HDCVI cameras provide the same resolution as most IP network camera systems using existing RG-59, RG-6, or CAT 6 UTP cabling.
Simplicity
HDCVI technology seamlessly integrates traditional analog surveillance systems with upgraded, high-quality HD video, making it the best choice to protect security investments. The plug and play approach enables full HD video surveillance without the hassles of configuring a network.
Multiple-format Support
The camera supports multiple video formats including, HDCVI, CVBS, AHD, and TVI. The camera can switch between these four formats via the OSD menu or the switch located on the video output cable, making the camera compatible with not only HDCVI DVRs but also most existing HD/ SD DVRs.
True Wide Dynamic Range
The camera achieves vivid images, even in the most intense contrast lighting conditions, using industry-leading wide dynamic range (WDR) technology. For applications with both bright and low lighting conditions that change quickly, True WDR (120 dB) optimizes both the bright and dark areas of a scene at the same time to provide usable video.
Advanced 3DNR
3DNR is noise reduction technology that detects and eliminates random noises by comparing two sequential frames. Dahua’s advanced 3DNR technology delivers remarkable noise reduction with little impact to sharpness, especially under limited lighting condition. 3DNR, in addition, effectively decreases the bandwidth and saves storage space.
Protection
The camera allows for ±30% input voltage tolerance, suitable for the most unstable conditions for outdoor applications. Its 4KV lightning rating provides effective protection for both the camera and its structure against lightning, and its IP67 ingress protection make it the choice for installation in even the most unforgiving environments.
