SKU: 82424938759

DAHUA HAC-B1A51 5MP HDCVI Fixed IR Bullet Camera

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Description

DAHUA HAC-B1A51 5MP HDCVI Fixed IR Bullet CameraDAHUA HAC B1A51 5MP HDCVI Fixed IR Bullet Camera * The parameters and datasheets below can only be applied to A51 S2 series * In order to use the 5MP 16: 9 HDCVI camera, the firmware of XVR must be upgraded to V4. 001. 0000001. 0. R. 200908 or later version. > Max. 25 fps@5MP (16: 9 video output) > CVI CVBS AHD TVI switchable > 3. 6 mm fixed lens (2. 8 mm optional) > Max. IR length 20 m, Smart IR > IP67, DC12V Product Data Camera Image Sensor 1 2. 7"

DAHUA HAC-B1A51 5MP HDCVI Fixed IR Bullet Camera

* The parameters and datasheets below can only be applied to A51-S2 series

* In order to use the 5MP 16:9 HDCVI camera, the firmware of XVR must be upgraded to V4.001.0000001.0.R.200908 or later version.

> Max. 25 fps@5MP (16:9 video output)

> CVI/CVBS/AHD/TVI switchable

> 3.6 mm fixed lens (2.8 mm optional)

> Max. IR length 20 m, Smart IR

> IP67, DC12V

Product Data

Camera

Image Sensor

1/2.7" CMOS

Max. Resolution

2880 (H) × 1620 (V)

Pixel

5MP

Scanning System

Progressive

Electronic Shutter Speed

PAL: 1/25–1/100000 s

NTSC: 1/30–1/100000 s

Min. Illumination

0.02 Lux/F2.0, 30IRE, 0 Lux IR on

S/N Ratio

More than 65 dB

Illumination Distance

20 m (66 feet)

Illuminator On/Off Control

Auto;manual

Lens

Lens Type

Fixed lens / Fixed iris

Mount Type

M12

Focal Length

3.6 mm (2.8 mm Optional)

Max Aperture

F2.0

Angle of View

2.8 mm: 125° × 106° × 56°

(diagonal × horizontal × vertical)

3.6 mm: 104° × 88° × 46°

(diagonal × horizontal × vertical)

Focus Control

N/A

Close Focus Distance

2.8 mm: 0.8 m (2.6 ft)

3.6 mm: 1.2 m (3.9 ft)

DORI distance

Lens

Detect

Observe

Recognize

Identify

2.8mm

56.0 m

(183.7 ft)

22.4 m

(73.5 ft)

11.2 m

(36.7 ft)

5.6 m

(18.4 ft)

3.6mm

80 m

(262.5 ft)

32 m

(105.0 ft)

16 m

(52.5 ft)

8 m

(26.2 ft)

Pan / Tilt / Rotation

Pan/Tilt/Rotation

Pan: 0° – 360°

Tilt: 0° – 90°

Rotation: 0° – 360°

Video

Resolution

5M (2880 × 1620); 4M (2560 × 1440); 1080P (1920 × 1080); 960H (960 × 576/960 × 480)

Frame Rate

CVI:

PAL:5M@25 fps; 4M@25 fps; 1080P@25 fps; 5M@25 fps

NTSC:5M@25 fps;4M@30 fps; 1080P@30 fps; 5M@25 fps

AHD:

PAL:4M@25 fps;

NTSC:4M@30 fps;

TVI:

PAL:4M@25 fps;

NTSC:4M@30 fps;

CVBS:

960H;

Video Output

Video output choices of CVI/TVI/AHD/CVBS by one BNC port

Day/Night

Auto (ICR) / Manual

OSD Menu

Multi-language

BLC Mode

BLC / HLC / DWDR

WDR

DWDR

Gain Control

AGC

Noise Reduction

2D

White Balance

Auto;manual

Smart IR

Yes

Mirror

Off/On

Privacy Masking

Off / On (8 area, rectangle)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 82424938759

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Verified Purchase
Lauren
Port Orchard, US
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2025
E
Verified Purchase
Elliz
Fort Morgan, US
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again. I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers. With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands. They shift. They lose their shape. They get holes in them and wear out too fast. Not these. I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ...... I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach. The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new. Like I said - I am back to buy them again. Great quality!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2021
J
Verified Purchase
Judy Fletcher
Louisville, US
★★★★★ 5
No slip low socks
Number of Items: 3, Color: Black/White (3-pairs), Size: Medium
Perfect! ❤️ these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
S
Verified Purchase
Susan
New York, US
★★★★★ 4
Stay put!
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
Nice and thin, soft, and stay put. I wear an 8 shoe and don’t like a thick sock taking up room. These socks are a bit tight on big toe. Wish they came in large.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 10, 2023
S
Verified Purchase
Stephanie Robnett
Grantham, US
★★★★★ 5
The best
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
The best no show socks I have found. Stay in place very well and hold up wash after wash. I have tossed all the other brands I’ve bought over the years and stocked up on these as I was tired of digging through the drawer hoping to find a clean pair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2024

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