SKU: 9792952281

DAHUA HAC-B4A21-VF 2MP HDCVI IR Bullet Camera

$106.20 $118.00
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Description

DAHUA HAC-B4A21-VF 2MP HDCVI IR Bullet CameraDAHUA HAC B4A21 VF 2MP HDCVI IR Bullet Camera > Max. 30 fps@1080p > CVI CVBS AHD TVI switchable > 2. 7 12 mm vari focal lens > Max. IR length 40 m, Smart IR > IP67,12 VDC Product Data Camera Pixel 2 MP Image Sensor 2MP CMOS Max. Resolution 1920 (H) 1080 (V) Scanning System Progressive Electronic Shutter Speed PAL: 1 25 s1 100,000 s NTSC: 1 30 s1 100,000 s Min. Illumination 0. 04 lux@F1. 7 (Color, 30 IRE) 0. 004 lux@F1. 7 (B W, 30 IRE) 0 lux

DAHUA HAC-B4A21-VF 2MP HDCVI IR Bullet Camera

> Max. 30 fps@1080p

> CVI/CVBS/AHD/TVI switchable

> 2.7-12 mm vari-focal lens

> Max. IR length 40 m, Smart IR

> IP67,12 VDC

Product Data

Camera

Pixel

2 MP

Image Sensor

2MP CMOS

Max. Resolution

1920 (H) × 1080 (V)

Scanning System

Progressive

Electronic Shutter Speed

PAL: 1/25 s–1/100,000 s
NTSC: 1/30 s–1/100,000 s

Min. Illumination

0.04 [email protected] (Color, 30 IRE)
0.004 [email protected] (B/W, 30 IRE)
0 lux (Illuminator on)

S/N Ratio

>65 dB

Illumination Distance

40 m (131.23 ft)

Illuminator On/Off Control

Auto/Manual

Illuminator Number

2 (IR light)

Pan/Tilt/Rotation Range

Pan: 0°–360°
Tilt: 0°–90°
Rotation: 0°–360°

Lens

Lens Type

Manual Vari-focal

Lens Mount

φ14

Focal Length

2.7–12 mm

Max. Aperture

F1.7

Field of View

H: 102°–32°; V: 54°–18°; D: 121°–37°

Iris Control

Fixed

Close Focus Distance

0.8 m (2.62 ft)

DORI Distance

Lens

Detect

Observe

Recognize

Identify

W

45.5 m

(149.28 ft)

18.2 m

(59.71 ft)

9.1 m

(29.86 ft)

4.6 m

(15.09 ft)

T

137.9 m

(452.43 ft)

55.2 m

(181.10 ft)

27.6 m

(99.55 ft)

13.8 m

(45.28 ft)

Video

Video Frame Rate

CVI:
PAL: 1080p@25 fps; 720p@25 fps
NTSC: 1080p@30 fps; 720p@30 fps
TVI:
PAL: 1080p@25 fps; 720p@25 fps
NTSC: 1080p@30 fps; 720p@30 fps
AHD:
PAL: 1080p@25 fps; 720p@25 fps
NTSC: 1080p@30 fps; 720p@30 fps
CVBS:
PAL: 960H
NTSC: 960H

Resolution

1080p (1920 × 1080); 720p (1280 × 720); 960H (960 × 576/960 × 480)

Day/Night

Auto (ICR)/Color/B/W

BLC

BLC; HLC; DWDR

WDR

DWDR

White Balance

Auto; Area white balance

Gain Control

Auto/Manual

Noise Reduction

2D NR

Smart Illumination

Yes

Mirror

Yes

Privacy Masking

Off/On (8 areas, rectangle)

Certification

Certifications

CE (EN55032:2015, EN61000-3-2:2014, EN61000-3-3:2013, EN55024:2010+A1:2015, EN55035:2017, EN50130-4:2011+A1:2014, EN62368-1:2014+A11:2017)
FCC (CFR 47 FCC Part 15 subpartB, ANSI C63.4-2014)

Port

Video Output

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

Power

Power Supply

12 VDC ± 30%

Power Consumption

Max. 4.6 W (12 VDC, IR on)

Environment

Operating Temperature

–30 °C to +60 °C (–22 °F to 140 °F)

Operating Humidity

<95% (RH), non-condensing

Storage Temperature

–30 °C to +60 °C (–22 °F to +140 °F)

Protection

IP67

Structure

Casing

Metal

Product Dimensions

209.6 mm × 90.4 mm × 90.4 mm (8.25" × 3.56" × 3.56")

Packaging Dimensions

250 mm × 135 mm × 110 mm (9.84" × 5.31" × 4.33")

Net Weight

0.59 kg (1.30 lb)

Gross Weight

0.75 kg (1.65 lb)

Installation

Wall mount; ceiling mount; horizontal pole mount
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: 9792952281

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4.6 ★★★★★
Based on 159 reviews
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Product Reviews
S
Verified Purchase
S Roth
Houston, US
★★★★★ 5
They work!!
Color: Fuzzy Slate Gray, Size: Regular, Color: Fuzzy Slate Gray, Size: Regular
I bought these to replace a very old pair that I originally got at Bed Bath and Beyond like 20+ yrs ago, and the fabric was starting to fray. However, the gel pad inside (at the heel) was still working just fine. Anyway, this new set includes 2 pairs, with a gel pad inside each heel area. Results are truly amazing, I kid you not. You can use them without a moisturizer, but I like to put moisturizer on my heels, then wear these overnight, and in the morning my heels are soft, with no dry skin and NO cracks. I like the fact that these are kind of soft and fuzzy (outside), but I LOVE that they leave your toes exposed and cool (because my heels feel kind of warm from the moisturizer and gel pad). They are of good thickness, and I feel they will last a long time (of course remains to be seen). Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
C
Verified Purchase
cindy
Birmingham, US
★★★★★ 5
Perfect for cracked heals ♥️
Color: Cheetah, Size: Regular, Color: Cheetah, Size: Regular
These are thick not cheaply made, has a nice texture inside the heal area which I love. I wear them at night after I apply Aquaphor to my heels & while sleeping they are very comfortable. I slipped these guys on & my heels are healing so much faster no more cracked heels for me. 😃 I highly recommend them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
K
Verified Purchase
Korine
Lowell, US
★★★★★ 4
These socks have saved my heels!
Color: Fuzzy Slate Gray, Size: Regular
I really love these socks and how they help my heels to feel. I tend to get large cracks on my heels, and wearing these while I sleep during the summer has saved me a lot of pain. One thing this has disappointed me a bit has been some unraveling of the threads around the top and bottom edges. Doesn't seem to matter how I trim them, the next morning when I wake up there is another hanging thread. Maybe it was just a glitch in the finishing of the batch of socks that I received. I would give them a second chance...this certainly isn't a deal breaker.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
S
Verified Purchase
Stella Rosa
Battle Creek, US
★★★★★ 5
They work!
Color: Fuzzy Blue, Size: Regular
The ZenToes Moisturizing Fuzzy Sleep Socks have been a wonderful addition to my nightly self-care routine. Infused with Vitamin E, olive oil, and jojoba seed oil, these socks are designed to soften and hydrate dry, cracked heels, offering both comfort and skincare benefits. The regular size in blue fits perfectly and adds a soothing touch to my bedtime. One of the features I appreciate most is the intense moisturization these socks provide. The infusion of Vitamin E, olive oil, and jojoba seed oil delivers deep hydration to my feet, effectively softening and healing dry, cracked heels. After just a few nights of wearing these socks, I noticed a significant improvement in the texture and smoothness of my skin. My feet feel much softer and more comfortable, which is a relief after long days on my feet. The fuzzy, cozy design of the socks is another standout feature. They are incredibly soft and comfortable, providing a warm and snug fit that’s perfect for sleep. The plush material feels luxurious against the skin, making it a pleasure to wear them overnight. This added comfort enhances the overall experience, making it easier to stick to a nightly moisturizing routine. The design is practical and thoughtful. The socks fit snugly without being too tight, ensuring they stay in place throughout the night. The regular size is perfect for my feet, and they accommodate a range of foot sizes comfortably. The blue color adds a touch of style and fun, making the socks both functional and visually appealing. The socks are easy to care for, which is a significant advantage. They can be hand-washed or machine-washed on a gentle cycle, and they retain their softness and moisturizing properties even after multiple washes. This durability ensures that the socks continue to provide effective hydration and comfort over time, making them a worthwhile investment for foot care. The moisturizing effect lasts long after I take the socks off in the morning. My feet remain hydrated and smooth throughout the day, reducing the need for additional foot creams or lotions. This lasting effect is a testament to the quality and effectiveness of the ingredients used in the socks. Overall, the ZenToes Moisturizing Fuzzy Sleep Socks have exceeded my expectations. Their combination of deep moisturization, cozy design, practical fit, and easy care makes them an essential addition to any skincare routine. The socks have significantly improved the condition of my feet, providing effective relief for dry, cracked heels and ensuring lasting softness and hydration. I highly recommend these moisturizing socks to anyone looking for a comfortable and effective solution for foot care. They have become an indispensable part of my nightly routine, ensuring that I wake up with softer, healthier feet every day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 29, 2024
C
Verified Purchase
Char
Lexington, US
★★★★★ 3
THESE THINGS SHED BAD!!!!!!!!!
Color: Pink Strawberries, Size: Regular
These things shed like you wouldn't believe. They're all over my furniture, my floor, my clothes. I'm finding little pink pieces of sock fluff everywhere and it's annoying. I don't think they did that until after I washed them. So if they don't shed on you right away, just wait, it'll most definitely happen. I returned because I won't where them again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

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