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Description
Centrale d'alarme DAHUA WiFiLa centrale DHI ARC3800H W2 est le cur du systme de scurit AirShield de DAHUA. Entirement compatible avec lensemble des priphriques de la gamme, elle vous permet de construire un systme dalarme sans fil ultra complet, modulable selon vos besoins. Capacit de connexion : Jusqu 150 priphriques sans fil 6 sirnes maximum 64 dtecteurs photo, dont 8 dtecteurs intrieurs 64 tlcommandes 8 claviers 4 rpteurs radio 8 camras IP DAHUA Connectivit et autonomie :
La centrale DHI-ARC3800H-W2 est le cœur du système de sécurité AirShield de DAHUA. Entièrement compatible avec l’ensemble des périphériques de la gamme, elle vous permet de construire un système d’alarme sans fil ultra complet, modulable selon vos besoins.
Capacité de connexion :
- Jusqu’à 150 périphériques sans fil
- 6 sirènes maximum
- 64 détecteurs photo, dont 8 détecteurs intérieurs
- 64 télécommandes
- 8 claviers
- 4 répéteurs radio
- 8 caméras IP DAHUA
Connectivité et autonomie :
- Connexion à Internet en Wi-Fi ou par câble RJ45 (fourni)
- Portée radio jusqu’à 2000 mètres en champ libre
- Batterie de secours intégrée avec une autonomie de 12 heures en cas de coupure de courant
- Armement/désarmement via :
Application mobile
Clavier, Télécommande, Badge ou Programmation horaire automatique
Toute la configuration de votre système est accessible et modifiable à distance grâce à l'application mobile dédiée.
🛡️ Garantie 3 ans – Fiabilité professionnelle signée DAHUA
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 15 reviews
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Product Reviews
★★★★★ 5
Made cleaning so much less stressful!
Size: C20
Love, love, LOVE! As a multi-pet home, I cannot stress how much less stressful cleaning is! Two cats, and a German Shepard, I run this once a day for the vacuum and every other for the mop.
vacuum has multiple settings based on needs. For myself I run it on standard (level 2/4) to pick up the loose hair that has fallen. The vacuum is also great for litter messes, though I do usually run it on turbo (level 3/4) for the better suction with litter. I was amazed the first time I watched the vacuum run over a large tuft of Shepard hair with ease! It has made cleaning so much easier
The mop aspect is mediocre, it does help don't get me wrong. But even on the high (level 2/2) it is meant as a maintenance rather than a full clean. Meaning some dirt, dander, dust it will do fine with. But sticky spills... unlikely.
The parts are super easy to change. The vacuum bag slides in and out, whereas the mop pads are similar to a Velcro and peel off easily when wanted.
As far as hair; it does well at sweeping it up. Though the first few runs I had to clean the roller each session due to the amount of hair. The ends of the roller brush come off easily, twist/pull and this allows you to remove any hair twisted around the piece. Super easy to clean and put back together!
Additionally, the only issue I have with the vacuum is that it likes to run over the cat toys that I didn't even know we still had! Ha! It will generally stop and wait for assistance if it runs one over or gets stuck which is as simple as removing the toy and pressing the power button again.
Set up was easy as well with a step-by-step instruction through the app. Unboxing to use only took at most 10 minutes!
I have noticed others comment on the price... I got this on sale for $350. Retail among other sellers is $700. I think for the price I purchased this is definitely worth the cost!
The initial vacuum bag was just replaced after 3 weeks, and it could have lasted probably another full week before demanding I change it. Though this will vary based on home to home.
The vacuum can be noisy at time, though much less than I expected after watching some video reviews. The loudest part of it is the vacuum running into furniture though. I think the mapping feature works well but given we have pets and are often moving things around our vacuum is often repositioning and re-mapping the rooms as needed, it does this automatically (after bumping into things).
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Replacement unit working better than the original
Size: C20, Size: C20
EDIT: Replacement unit working better than the original! The seller offered a full refund, and since I had another vacuum of there's (different model) that didn't have any of the same problems, I asked for a replacement instead. The other vacuum has been great! Replacement was in hand shortly after returning the defective unit. None of the same issues as the original. It's not like this is the greatest robot vacuum ever invented, but for the price this is a rock solid vacuum and mop that's now been keeping our floor spotless for more than 2 months! I feel bad for the old vacuum... :-( I've worked in manufacturing before, so I know you'll have a dud unit every so often. Unfortunately, I received one of those. Fortunately, Eufy seems to be a company that stands by it's products. I'm very pleased with the quality of their customer service and of the replacement unit.
ORIGINAL: No longer runs: Laser sensor malfunction after just 5 months. This product was maybe 3 out of 5 to begin with. It didn't do a very good job at avoiding cables or animals. Nor did it do a good job at getting corners, but it did run when scheduled. After just 5 months, it rolls out from the station and stops. I get a notification that the Laser sensor may be blocked. There's nothing blocking the sensor. I've cleaned the lens, and the issue still persists.
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Reviewed in the United States on October 17, 2025
★★★★★ 3
My Experience With The C20
Size: C20
Initial Performance (First 3–4 Months)
For the first three to four months, the Eufy C20 worked exactly as advertised. It kept the entire first floor of my home—100% tile—spotless. Navigation was smooth, battery life was consistent, and it completed full cleaning cycles without issues. During this period, I was very satisfied with its performance.
Battery & Performance Decline
After about four months, the battery life and overall reliability started to decline noticeably. The robot began dying in random locations instead of returning to the dock when the battery was low. At times, it would simply stop in the middle of a cleaning cycle and remain in place until the battery was completely drained, forcing me to manually pick it up and return it to the dock.
Navigation & Software Issues
The navigation system also became unreliable over time. The robot would occasionally lose track of where it was, run headfirst into walls or corners, and fail to properly reroute itself. Pressing the home or power button to resume a task was inconsistent—sometimes it would restart, other times it would just sit there unresponsive.
Home Environment & Maintenance
My home does not have large carpets or difficult obstacles, so there’s no clear environmental reason for these issues. I also perform weekly to bi-weekly maintenance on the robot, including cleaning sensors and components, but this has not resolved the ongoing problems.
Overall Verdict
Overall, the Eufy C20 is a decent robot vacuum/mop for short-term use, but based on my experience, it does not hold up well long-term. I expected at least a full year of reliable performance, but the noticeable decline after only four months was disappointing, especially when paying over $400 for the product. It’s a good option for temporary or light use, but I would hesitate to rely on it as a long-term cleaning solution. Hopefully the warranty will cover whatever malfunctions the device is going through.
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Reviewed in the United States on December 9, 2025
★★★★★ 2
Not worth it
Size: C20
In the beginning I thought this vacuum was great. The longer I use it the more annoyed I am. At this point I often find myself using my old cannister vacuum or broom and manually mopping despite having a several hundred dollar appliance that is supposedly nearly autonomous in these tasks. Customer service has been mostly useless and often concludes the vacuum is working as it should. If this is the best it is intended to work, that's an issue.
Here are the problems I've noticed:
1. Many moving parts on the underside of the robot end up winding up human hair and other debris. In most of these places, it isn't possible to disassemble to the point of easily pulling out the hair. I desire to run the vacuum once weekly for a ~1400 sq ft apartment and at this rate, once or twice a month I need to be picking at the component parts with the tip of a knife to try to wrestle the hair tourniquets off of where its wound up. If I don't do that, the vacuum is incredibly squeaky and loud.
2. Debris accumulates in the base station tray and clogs it up such that base station needs to be cleaned regularly or else the mops stay too wet and do not dry. Again this is a once or twice per month task. Otherwise you could run an entire dry cycle on the mops and still come out with soaking wet mops. Do I remember to check the mops every time to make sure they did indeed dry? No, so then soggy nasty mops sit there for a long time. Kind of defeats the purpose of self washing and drying.
3. Possibly related to the above or not, I really can't tell -- the mops start out too wet and leave little puddles that dry into unsightly water spots on the floor when it first begins mopping. Then it quickly loses all water and seems to be doing basically nothing. Adjusting the frequency of return helps slightly with the second problem but not the first, and I end up passing over with a manual mop every time to clear standing water and eliminate water spot stains.
4. Poor emptying of dustbin resulting in poor suction and accumulation of debris at the site of the base station. Seriously, half the time even on turbo suction this vacuum LEAVES more dust on rugs in its wake than it picks up. I can clean my doormat better with a quick sweep with the broom. When it gets back to the base station to empty, half the time it flings debris out from the base station at high speed and I have to sweep up its mess. Manually emptying the on-board dust bin helps, but isn't supposed to be necessary -- this thing is allegedly self emptying and certainly makes quite enough sound during the emptying phase to have you believe it is emptying the dustbin. Add one more once or twice monthly maintenance requirement that isn't supposed to be needed.
5. Dustbunnies, rather than getting sucked up, attach to various parts of the bottom of the vacuum contributing to other problems described above. As soon as it goes over a rug, the rug pulls all the dustbunnies off, now they are on your rug instead of the wood floor. If the vacuum makes it back to the base station with the dustbunnies attached, now they are clogging up the mop tray.
6. Sometimes cannot figure out how to reseat itself at home base. It finds the base station, then just gets stuck in a loop of rearing up and heading towards it and missing. I have to sometimes out it back to charge manually.
All in all, it really needs a lot of attention for what is meant to be a pretty independent machine. Customer service flat out told me the mopping is functioning as expected. Gross, I don't know why you would think any customer wants puddles of water left behind that can damage wood floors or leave unsightly stains, but ok. Only ever offered to send a replacement vacuum if I pack this one up to return. If it's working properly, I don't want a replacement, I want a refund! Let me go back to my old cannister vacuum and hand mop in peace. Maybe the models at higher price points are better without these issue; I wouldn't know.
Edited to add, the manufacturer reached out to me and was able to set me up to try out the S1 ad an alternative due to these concerns. I am bumping the review from one star to 2 for the strong customer service. In my opinion, the S1 is a much stronger performing vacuum/mop combo.
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Good buy
Works well with my Eufy C10, very easy to install
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Reviewed in the United States on March 26, 2026