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Description
Dahua DHI-ARC3800H-W2(868) AirShield Wi-Fi Draadloze Alarmhub 2Productbeschrijving De Alarmhub beheert de draadloze alarminstrumenten in uw systeem om u te waarschuwen wanneer deuren kapot gaan, ramen worden geopend, glas breekt, er brand uitbreekt of er waterlekken optreden. Bij een inbraak waarschuwt de hub zowel de alarmontvangstcentrale als de mobiele app (DMSS of DoLynk Care) en verzendt video's van de PIR camera en IPC om u op de hoogte te houden van gebeurtenissen zonder dat u persoonlijk toezicht hoeft te
Productbeschrijving
De Alarmhub beheert de draadloze alarminstrumenten in uw systeem om u te waarschuwen wanneer deuren kapot gaan, ramen worden geopend, glas breekt, er brand uitbreekt of er waterlekken optreden. Bij een inbraak waarschuwt de hub zowel de alarmontvangstcentrale als de mobiele app (DMSS of DoLynk Care) en verzendt video's van de PIR-camera en IPC om u op de hoogte te houden van gebeurtenissen zonder dat u persoonlijk toezicht hoeft te houden.
Specificaties
| Draadloze zone | 150 kanalen draadloze randapparatuur (6 sirenes, 64 PIR-camera's (alleen 8 PIR-camera's voor binnen), 64 sleutelhangers, 8 toetsenborden en 4 repeaters) |
| Netwerkmodus | Ethernet en wifi |
| Netwerkpoort | 1 RJ-45, 10 Mbps/100 Mbps Ethernet-poort. |
| Opslagbatterij | Eén ingebouwde oplaadbare lithiumbatterij van 4.750 mAh. |
| Video-ingang | 8-kanaals IPC, die alleen het uploaden van alarmvideo's ondersteunt. |
| Audio-uitvoer | 1 kanaal |
| Volumeregeling | Ja |
| Stemuitzending | Lokale spreker |
| Indicatielampje | De indicator geeft de status van alarmen, in en uitschakelen, de netwerkverbinding en apparaatstoringen aan. |
| Knop | Bevat een resetknop, spanningsknop en AP-schakelknop. |
| Videoverbinding | Ja |
| Offline-cache | Slaat maximaal 50 alarmmeldingen op. |
| Bewapenen en ontwapenen | App, toetsenbord, afstandsbediening, kaart, gepland in en uitschakelen. |
| Op afstand updaten | Cloud-update |
| Detectie van een lege batterij | Ja |
| Sabotage | Ja |
| Gebruikersbeheer | 33 app-gebruikers (31 algemene gebruikers, 1 beheerder en 1 installateur) en 32 toetsenbordgebruikers |
| Logboeken | Tot 5.000 vermeldingen |
| Transmissieprotocol | SIA, SoftGuard |
| Carrier Frequency | 868,0–868,6 MHz |
| Zendervermogen (EIRP) | Limiet 25 mW |
| Communicatiemechanisme | Tweerichtingsverkeer |
| Communicatie afstand | Tot 2.000 m (6.561,68 ft) in een open ruimte. |
| Encryptiemodus | AES128 |
| Frequentieverspringing | Ja |
| Taal | Engels |
| Stroomvoorziening | 100–240 V wisselstroom, 50/60 Hz |
| Standby-tijd | De batterij gaat tot 12 uur mee als deze volledig is opgeladen en voldoet aan de volgende voorwaarden: Er is verbinding met wifi, de ID is gekoppeld aan de alarmcentrale, het hartslaginterval is 1800 seconden en er is verbinding met 8 randapparaten en de cloud. |
| Stroomverbruik | ≤12W |
| Bedrijfstemperatuur | Wanneer de batterij niet wordt opgeladen: –10 °C tot +55 °C (+14 °F tot +131 °F) Wanneer de batterij wordt opgeladen: 0 °C tot +45 °C (+32 °F tot +113 °F |
| Bedrijfsvochtigheid | 10%–90% (RV) |
| Productafmetingen | 174,8 mm × 174,8 mm × 38,3 mm (6,88” × 6,88” × 1,51”) (L × B × H) |
| Netto gewicht | 510 gram (1,12 pond) |
| Brutogewicht | 860 gram (1,90 pond) |
| Installatie | Geschikt voor wand en bureaubladmontage. |
| Behuizingsmateriaal | PC + ABS |
| Certificeringen | CE |
| Corrosiewerend niveau | Basisbescherming |
| Opslagtemperatuur | –10 °C tot +55 °C (+14 °F tot +131 °F) |
| Opslagvochtigheid | 10%–90% (RV) |
| Verpakkingsafmetingen | 254 mm × 211 mm × 61 mm (10,00” × 8,31” × 2,40”) (L × B × H), los in de binnendoos 524 mm × 508 mm × 442 mm (20,63” × 20,00” × 17,40“) (L × B × H), beschermhoes |
| Wi-Fi-standaard | IEEE 802.11b/g/n |
| Wi-Fi-frequentiebereik | 2400-2483,5 MHz |
| Wi-Fi-stroomoverdracht | ≤20 dBm bij 2400-2483,5 MHz |
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
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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
4.1 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Anyone with multiple monitors should buy this
I have been wanting something like this for years. I use three monitors, and keeping them all aligned is impossible. I've considered using tape, but that seems like it would lead to a sticky mess and it would never hold well. I imagined some solution with magnets, but never came up with anything that I thought I could implement myself.
As soon as I saw this product, I was ordered two sets. I knew that this was either going to be a revolution, or a huge disappointment. It was not a disappointment.
Installation is simple as can be, clean off your monitor back with some alcohol wipes (they should consider including some, would be a nice touch). For my screens, alignment was super easy because they have really square corners so I just stuck my aligners right at the corners and it worked great. For a screen with a curved back or something more geometric you probably want to get the screens in place first, then stick both parts at the same time. Either way, they stuck really well and the pads are flexible so they would work on a curved back just as well as flat.
The brackets also have a locking part that allows you to slide them side to side a bit giving you more flexibility in mounting, and then you can lock them down once everything is lined up so they hold nice and firm. I also managed to screw up and put the wrong part on the wrong side, but luckily if you unlock the bracket you can slide the main part off of the adhesive part completely, so I was able to simply swap the two main parts without needing to peel the adhesive part off. It's a well thought out design and I was impressed by just how much flexibility there was in the mounting solution while still allowing for a very easy installation and rigid final setup.
The magnets are strong, strong enough that if I needed to move a monitor regularly it would actually be annoying because while you can definitely take these apart they hold way too well to be doing so all the time. These are clearly intended for a permanent installation, without making it overly difficult to take things apart if you have to. If you have to turn a screen often though, such as to show something to a client or make the screen visible from another area of the room, I'm not sure if these will be what you need as they don't just come apart easily. If you want your screens to stay where you put them though, they are awesome!
For me, these were perfect, and based on the design I think they should work well for most monitors and most setups. I'm so glad this product exists, it was well worth the money.
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Reviewed in the United States on August 10, 2025
★★★★★ 5
Great product!!!
I feel the price is a little high, but the product is amazing! Works just as described!!! I will be purchasing another set for the bottom of my work monitors. Currently their is just 1 set keeping these level.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
I'd give 10 stars if I could
Holy cow! This is it!
For YEARS I've been looking for a product that would align the bezels on my monitors. I found this product by scrolling through reels and then found the link to Amazon. The price was steep and I was hesitant, but I took the gamble and I'm so glad I did.
Installation is slightly confusing, and you really want to know how this works before you adhere it to any surface. I'll break it down for you:
Align your monitors flat next to each other. Attach one side with the adhesive, then snap the other side on with the magnet. Peel that adhesive strip and lay it on your second monitor so that they are even. Repeat for the bottom. Twist the U shape up for the left, down for the right. Adjust your angle and then lock them by putting the U shape back to how it was. That's it.
The stability on these simple magnets is excellent. I went from a wobbly mount to locked in and only moving when I want it to. I'm so happy this product exists.
That's German engineering for you. 💪💪
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Works well...but the price!
I ordered two sets to connect 3 monitors together for a workstation at my job. These are well designed and the magnets are pretty strong. Installation is easy and it holds the alignment well.
The only issue is the price. For what it is, the price is quite high. The value proposition would be much higher for those who need to be able to not have them aligned from time to time, such as rotating one around for others to see in an office. But if don't need to do this and just want alignment, there are much cheaper options.
If you want to go the cheapest DIY route and it won't be seen, some popsicle sticks with two sided tape works well. You can crack them in the middle to act as a hinge.
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Awesome product only thing that worked
I originally thought the Screen Buddy was overpriced, but after spending hundreds of dollars trying to perfectly align my monitors for sim racing, this is genuinely the only thing that has actually worked properly.
Triple monitor alignment is one of the most frustrating parts of building a sim rig, especially with monitor arms constantly moving or sagging. This finally made everything line up the way I wanted.
Expensive? Maybe. Worth it after all the headaches? Absolutely. Great job.
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Reviewed in the United States on May 9, 2026