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Description
DAHUA®|HAC-HDW1801EMP-A|3 YR WTY. 4K IR Turret, 50m IR, 3.6mm, Audio, WDR, CVI/TVI/AHD, 12Vdc *Special order. 3-5 days lead timeExperience 4K video surveillance with the simplicity of reusing existing coaxial infrastructure. The 4K HDCVI camera adopts a powerful Dahua ISP and advanced 1 2. 7" CMOS sensor, which provides superior high quality images. In addition, the camera features broadcast quality audio to provide enhanced supplementary evidence collection. Ultra high definition and a complete set of features makes the 4K HDCVI camera an ideal choice for mid to large size
Experience 4K video surveillance with the simplicity of reusing existing coaxial infrastructure. The 4K HDCVI camera adopts a powerful Dahua ISP and advanced 1/2.7" CMOS sensor, which provides superior high quality images. In addition, the camera features broadcast quality audio to provide enhanced supplementary evidence collection. Ultra-high definition and a complete set of features makes the 4K HDCVI camera an ideal choice for mid to large-size businesses and projects where both highly reliable surveillance and construction flexibility are demanded.
Features
- 4 Signals over 1 Coaxial Cable - HDCVI technology supports 4 signals to be transmitted over 1 coaxial cable simultaneously, i.e. video, audio*, data and power. Dual-way data transmission allows the HDCVI camera to interact with the HCVR, such as sending control signal or triggering alarm. Moreover, HDCVI technology supports PoC for construction flexibility.
* Audio input is available for some models of HDCVI cameras. - Long Distance Transmission - HDCVI technology guarantees real-time transmission at long distance without any loss. It supports up to 700m transmission for 4K and 4MP HD video via coaxial cable, and up to 300m via UTP cable. *
*Actual results verified by real-scene testing in Dahua's test laboratory. - Simplicity - HDCVI technology inherits the born feature of simplicity from traditional analogue surveillance system, making itself a best choice for investment
protection. HDCVI system can seamlessly upgrade the traditional analogue
system without replacing existing coaxial cabling. The plug and play approach enables full HD video surveillance without the hassle of configuring a network. - Broadcast-quality Audio - Audio information is used as supplementary evidence in video surveillance applications. The HDCVI camera supports audio signal transmission over coaxial cable. In addition, it adopts unique audio processing and transmission technology that best restores source audio and eliminates noise, guaranteeing the quality and effectiveness of collected audio information.
- Multiple-formats - The camera supports multiple video formats including HDCVI, CVBS, and other two common HD analogue formats in the market. This feature
makes the camera compatible with not only XVRs, but also most existing HD/ SD DVRs. *
*Use OSD menu to switch HDCVI to other video formats. Use PFM820 UTC Controller to switch CVBS to HDCVI video format. - Protection - The camera's outstanding reliability is unsurpassed due to its rugged design. The camera is protected against water and dust with IP67 ranking, making it suitable for indoor or outdoor environments. Supporting ±30% input voltage tolerance, this camera suits even the most unstable power supply conditions. Its 4KV lightning rating provides protection against the camera and its structure from the effects of lightning.
- Smart IR - The camera is designed with microcrystalline LED IR illumination for best lowlight performance. Smart IR is a technology to ensure brightness uniformity in B/W image under low illumination. Dahua’s unique Smart IR adjusts to the intensity of camera's infrared LEDs to compensate for the distance of an object, and prevents IR LEDs from overexposing images as the object come closer to the camera.
- 4K Real-time Image Display - Used together with 4K Real-time XVR, the camera can output 4K real time video stream with clear details and no lag or smear.
Specifications
- Max. 4K resolution, real-time video transmission
- CVI/CVBS/AHD/TVI switchable
- Built-in mic (-A)
- Fixed lens (2.8mm; 3.6mm optional)
- Max. IR length 30m, Smart IR
- IP67, 12V±30%DC
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.5 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
My Matcha Frother
Color: Silver, Color: Silver
I recently started making matcha tea at home and opted for a milk frother instead of the bamboo hand whisk that is traditionally used for matcha, due to health issues. I have a connective tissue disorder and early osteoarthritis and need to protect my wrists, so the hand whisk would be risky for my daily matcha habit. The Vomelon frother is perfect for mixing up my matcha tea powder into my water or almond milk while saving my joints from further damage.
I liked the included cover for this model, and the large on/off button on the top of the device. Other models have their switches and buttons placed in odd places that could be awkward for me. I have trouble pushing this device's button with my thumb, even though it seems designed to be done this way, so I typically use my index finger to switch it on and off. This works well for me. You don't have to hold the button while it's on - it stays on until you turn it off - so that helps.
The two coil attachments are nice, too. The single coil one does a decent job, but the triple coil really blends up well, and froths up my almond milk into a airy, frothy cup rather quickly, if that's what I'm going for.
It uses 3 AAA batteries, and I worried they would get used up with daily use, but I have been using mine daily for about a minute or so each day (I blend my matcha, then rinse off by blending clean water and then spin dry before I store it) every day for about a month now and it's still going strong on the original batteries. I am ready with spares for whenever they peter out, though. I checked the battery chamber to make sure I knew how to switch them out, and it's very easy. They are stacked in the end of the device, so you just twist off the end and slide out. There is a holder for the 3 batteries, so you pop them out/in and just slide it back into the main housing and twist it back on. The +/-indicators show which way to place them. I believe it's 2 one way and one the opposite way.
The attachments simply hold onto the spinning bit with tiny grooves in the spinner that fit snugly. They don't click into place or anything, but I have had no trouble with them feeling loose or anything while in use, as long as they are fully in place. Just slide them all the way in and you'll be fine.
Overall, this works well for my matcha tea and milk frothing needs. I tried it once with an egg to see how well it scrambled, but I used the single coil attachment and it seemed to slow down a lot in the gooey egg viscosity, so I can't say I would recommend it for scrambling eggs, especially if you are doing more than one at a time. However, I only tried once and only with the smaller, single coil attachment. You may have better luck with it if that's what you're looking to use it for.
Overall, I'm happy with my purchase.
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Reviewed in the United States on May 5, 2019
★★★★★ 5
Great whisk, but stop changing the whisk design or sell extras
Color: Silver
Overall, I really like this frother. It’s my third one from the same brand. (They last about a year but kind of expected for $15.) I like that it comes with multiple whisks, that it can travel, and that the whisks are removable and can be thrown in the dishwasher. As others have pointed out, the batteries it comes with are pretty useless. I didn’t get even one proper whisk out of them. I also wish they wouldn’t change the whisk design every time I purchase. I like having extra whisks and just have to throw the old ones out. I wish these companies would sell extra whisks.
Update: after using this for a couple weeks, I really don’t like the design of he new whisk attachments. They’re hard to pull off without sending the tip flying.
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Reviewed in the United States on January 23, 2026
★★★★★ 5
Delightful little device now that I've had a practice run with it
Color: Silver
I just picked this up to make my own cappuccino and breve and I must say that I've fallen in love with the thing. My first use was a bit of a misfire owing to my inexperience with it, but the second time worked like a champ. The trick is to ensure that you have plenty of empty head space in the container to develop a good vortex and foam volume while still having a tall enough fluid column to keep the mixing head mostly submerged while generating the vortex.
My first attempt involved using about half a cup of half and half in a small saucepan. I had more than enough head space, but I was only barely able to keep the mixing head (it comes with two: a single turn coil and a 3-turn coil of coil) submerged and that went poorly, leaving me with a bit of a mess to clean up on my rangetop as the lack of fluid column ended up slinging the fluid around and out of the saucepan.
The second attempt went far better, as I transferred the barely-simmered half and half back into the Pyrex two-cup mixing cup in which i initially measured the 4 fl. oz. This time it worked beautifully. There was just enough unfoamed column height to keep the mixing head well covered prior to powering up and it just barely kept me sufficiently covered while powered up to maintain a very vigorous yet controlled vortex. This method also had the advantage of telling me exactly how much total foamed volume I had generated. The resulting breve had a wonderfully thick and frothy head in my mug and resulted in a delightfully topped beverage which, if anything, had a bit too much foam and a bit too little liquid. That's on me, however, since I wanted to get a feel for the device under better conditions to build my own experience; I'll just run the frother for less time next time.
Cleanup of the device itself is quite easy: simply detach the mixing head and shaft from the motor base and rinse. I always hand-wash my dishes, so I'm not in a good position to speak to its machine wash compatibility, but I suspect that it would come out just fine, provided that care is taken not to bend the shaft or coil head out of shape.
The device itself is small enough to fit in a purse and should travel quite nicely, though you'll need to commit to a single mixing head, which will almost certainly turn out to be the smaller one.
It's really nice to be able to make cappuccino/breve at home any time I see fit now. It's going to make a well-loved addition to my kitchen.
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Reviewed in the United States on December 6, 2018
★★★★★ 4
Worked well, fast, then overheated. Contacted Vomelon and they were quick to help me replace unit.
Color: Silver
Update ***Vomelon customer service is great! I contacted them about my issue, they responded quickly and worked to resolve it. They're giving me a new one! Hope this one works out. I'm adding back a star for their service.
Update 4/18/20 While making whipped Dalgona coffee today the unit slowed down the completely shut off. I pressed the power button again to restart and same thing, it starts at high speed then slows down and shuts off. I will be contacting seller. I’m taking away a star, can’t believe this is happening.
First day using this frother with the batteries provided and the body became very hot. Used it for about 3 minutes and the heat became uncomfortable in my hands. Took out the AAA alkaline batteries “Nai Li Wang” brand made in China and replaced them with some Kirkland AAA that I had on hand. Problem solved! No overheating with the new batteries. Throwing away the China made batteries. Would’ve been 5 stars if it weren’t for the overheating.
Other than that mishap, the frother was easy to use and pretty powerful. Whipped up my coffee with maple syrup (making Dalgona coffee) really quick. I like that it has a cover for storage. I don’t have much space so having a compact size with a cover is convenient, I can put it in a drawer or storage box without damage to the whisk.
Update: Day 2 of use
Body of unit became warm but not hot as with original batteries provided. I used new batteries. Had the unit on for 4-5 minutes to whip my dalgona coffee. Not sure if the unit is supposed to get warm? Is it normal? I will contact seller.
Besides that, my coffee got whipped pretty quick. I want to upload a photo but seems that Amazon has taken away that function for me? I could upload photos for my previous reviews on other products.
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Reviewed in the United States on April 16, 2020
★★★★★ 5
Great Little Frother.
Color: Silver, Color: Silver
I really like this this little frother. What I noticed first is that it comes with a cover for the frothing arm. That’s very practical if you travel with it. I have traveled with a frother before and I put it in a toothpaste box, not much protection there.
I use this 2 to 4 times a day. I can come pretty close to creating a Starbucks flat white at home. That saves $$$. The next thing I really like is that I can remove the arm for cleaning. If the arm does not come off clean up is a bit tricky.
How does it work? Great! It has one speed, Fast. The power button is on the base of the handle so I just had to adjust the way I hold the frother when I turn it on. One thing, make sure the froth head is all the way into the liquid when you start it, lol. This little machine whips up a thick froth fast.
It comes with 2 frothing heads, a three spring version as well as a standard one spring.
There is a lot of plastic, but it doesn’t look or feel cheap. Actually I think it helps keep the weight down. I travel some and I appreciate when things are light.
Over all, this is really nice it’s light portable and works great. I highly recommend this product.
I was given this product for review and I am so glad they choose to contact me. I have been frothing milk for my coffee for the last few years.
This has now became my go to frother.
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Reviewed in the United States on July 12, 2019
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