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Description
Dahua DHI-ARD2231-W2(868) AirShield Draadloze dual microwave PIR-detectorProductbeschrijving Wireless Dual Tech Detector is een binnendetector die menselijke bewegingen detecteert. Met behulp van passieve IR en microwaredetectietechnologien detecteert het apparaat de beweging van personen en detecteert wanneer ze het detectiegebied zijn binnengekomen. Door deze technologien worden valse detecties veroorzaakt door thermische interferentie ook sterk verminderd. Het apparaat is eenvoudig te installeren en te gebruiken en kan
Productbeschrijving
Wireless Dual-Tech Detector is een binnendetector die menselijke bewegingen detecteert. Met behulp van passieve IR en microwaredetectietechnologieën detecteert het apparaat de beweging van personen en detecteert wanneer ze het detectiegebied zijn binnengekomen. Door deze technologieën worden valse detecties veroorzaakt door thermische interferentie ook sterk verminderd. Het apparaat is eenvoudig te installeren en te gebruiken en kan direct op de app worden geconfigureerd.
Specificaties
| Indicatielampje | 1 × groene alarmindicator |
| Knop | 1 × aan/uit-schakelaar |
| Op afstand updaten | Cloud-update |
| Detectie van een lege batterij | Ja |
| Knoeien | Ja |
| Meetbereik (temperatuur) | Binnen: –15 °C tot +65 °C (+5 °F tot +149 °F) |
| Meetnauwkeurigheid | ±1 °C (±1,8 °F) |
| Sensor | Dubbele-element PIR-sensor met laag geluidsniveau, microgolfsensor |
| Detectiemodus | PIR + Microgolf |
| Gevoeligheid | 3 niveaus instelbaar |
| Detectiebereik | 12 m (39,37 ft) (90°) met installatiehoogte van 2,2 m (7,21 ft) |
| Detectiesnelheid | 0,3 m/s–3 m/s (0,98 ft/s–9,84 ft/s) |
| Microgolffrequentie | 24G |
| Immuniteitsniveau van huisdieren | ≤ 18 kg (39,68 lb), lengte < 50 cm (19,68 ft) |
| Weerstandsniveau wit licht | 2000 lux |
| Tweeweg digitale temperatuurcompensatie | Ja, geen verzwakking van de detectieafstand bij hoge temperaturen. |
| Testmodus | Ja |
| Bedrijfsstroom | 11 uA |
| Alarmstroom | 71mA |
| Draaggolffrequentie | 868,0 MHz–868,6 MHz |
| Zendvermogen (EIRP) | Limiet 25 mW |
| Communicatiemechanisme | Tweerichtingsverkeer |
| Communicatie afstand | Tot 1.600 m (5.249,34 ft) in een open ruimte |
| Encryptiemodus | AES128 |
| Frequentieverspringing | Ja |
| Stroomvoorziening | CR123A×1 |
| Levensduur van de batterij | 3 jaar (bij 10 keer per dag activeren met een batterij-efficiëntie van 70%) |
| Stroomverbruik | Maximaal 615 mW |
| Bedrijfstemperatuur | Binnen: –10 °C tot +55 °C (+14 °F tot +131 °F) Gecertificeerde temperatuur: –10 °C tot +40 °C (+14 °F tot +104 °F) |
| Bedrijfsvochtigheid | 10%–90% (RV) |
| Productafmetingen | 104,0 mm × 60,0 mm × 50,0 mm (4,09" × 2,36" × 1,97") |
| Verpakkingsafmetingen | 135,0 mm × 98,5 mm × 56,8 mm (5,31" × 3,88" × 2,24") |
| Netto gewicht | 106 gram (0,23 pond) |
| Brutogewicht | 184 gram (0,41 pond) |
| Installatie | Muurbevestiging, Plafondbevestiging (Met de beugel ARA33) |
| Behuizingsmateriaal | PC + ABS |
| Certificeringen | CE EN 50131-1:2006+A1:2009+A2:2017+A3:2020 EN 50131-6:2017+A1:2021 EN 50131-5-3:2017 EN 50131-2-4:2020 Veiligheidsklasse 2 Milieuklasse II |
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
4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
My favorite pimple patches
Style: Bundle, Size: 2 Piece Set
I've tried the competitor Mighty Patches and a couple other pimple patches. These are my favorite because they stay on the best and do the best job of healing/absorbing. The Microcrystal Spot Cover actually hurts a little when you put it on from the little spikes... but I love that because I feel like it's actually doing something! I wish they were a little more affordable.
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Expensive but effective
Style: Bundle, Size: 2 Piece Set
This isn’t a miracle cure for acne, but it has proven beneficial for reducing redness and shortening healing time, in part because of how it works and also just as a barrier to prevent picking. Product does what the packaging says it will do. These dots are impressively thin. As the fluid is drawn into the patch, it creates a more pronounced white bump, but it is still thinner than typical extra thin hydrocolloid dressings.
If you’re planning to walk around and be seen while wearing acne patches, these are a great option, even if they are expensive. If you’re going to be primarily wearing patches while you sleep and are at a place in your life where you just don’t care how it looks as long as it works, shop around and cut a patch to size from a large (4”x4” or so) hydrocolloid dressing, and it will do the job just as well.
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Reviewed in the United States on February 11, 2020
★★★★★ 4
Worked well, comfortable.
Style: Bundle, Size: 2 Piece Set
These patches adhere fairly well to my chin, over a very large cystic pimple. I admit, the microneedle patches I used before caving and picking were the Kill brand, not Rael. I figured I would buy both on the off chance I ised all the Kill stickers (whose price tag is honestly ridiculous). After the zit popped though, I found this brand to be preferrable to my usual HERO staple for a number of reasons:
1) While the hero patches are bigger and thicker, this brand was more comfortable to wear long term. As I was treating during my work day, I felt more confident with these thin, flexible sheets than with other brands. They're thinner, but seem to work just as well and are more comfortable.
2) They're practically invisible on my face. Now, it's not really possible to make these things disappear entirely. Because they're thinner, they do wrinkle some when I speak and tend to stretch on the skin. I will say that this recurring zit does live on my chin, so there may be more movement and wear as a result.
3) I feel less inclined to change them early. Because they wear so well, this brand was much less noticable on my face. I couldn't feel it and in fact, forgot it was there until I took a bathroom break. That made it easier to focus on getting work done rather than worrying about how it felt or looked. I did wear a tiny bit of concealer over these and no one seemed to notice.
Overall, pretty good product.
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Reviewed in the United States on March 12, 2020
★★★★★ 5
Magic Spots make your acne..DISAPPEAR!
Style: Bundle, Size: 2 Piece Set
I like this product. I was nervous cause I am allergic to everything. However I got an ingrown pimple right under my nose. It hurt like a mother. So I bought these in hopes it would eat it off my face and I was pleasantly surprised. I put the one that has the crystals under my nose overnight. This morning it ate all the sebum around it and left a weak white head. When I removed the white head, I had a pretty decent hole under my nose. I put a dot from the pink box on it after disinfecting it and drying it off in hopes it will keep it protected while I wear a mask at work. I also had one in pink box on the side of my face in hopes of helping a ragged acne that I had scratched of the scab in my sleep the night before. So it was pretty rough skin. I slapped the dot from the pink box over night as well and my skin is soft. Its still a little red from where it was but its not raised and it doesn't hurt. These are pretty awesome. The adhesion sticks all night did not move ONCE. It was almost like removing a bandaid. They stretch well and fit over most acne spots and they are thick enough to not tear easy and hold all the gross that comes out of your face. I had no real expectations of the product because I wasn't sure how this face magic worked but it definitely does the trick when you have painful ingrown and just stubborn acne spots.
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Reviewed in the United States on February 3, 2021
★★★★★ 3
They work, but not really worth it
Style: Bundle, Size: 2 Piece Set
Off the bat, they work pretty well. It’s not a miracle and they do work but I’d look for something else before buying these again. The micro needle ones did help deeper acne but they break way too easily to justify buying.
The packaging sucks and is confusing. The micro needle dots are two parts that work awfully together. I broke 2 of the 9 just trying to get them off the package. The miracle dots are slightly better but if you get it stuck to your finger trying to get it off, that dot’s a wash.
The adhesive is good in some places and not so good at the edges. A few stayed on well and those that did were nicely transparent. These are not invisible but I’d run out with one on and I have darker skin.
I took them off and noticed that fluid had been drawn out and overall, things were flatter and more calm. However, the amount of these things I threw away due to the awful packaging and just not adhering, I’d have to be at a last ditch effort to buy these again.
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Reviewed in the United States on January 25, 2020