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Description
Dahua DHI-ARD2251E-W2(868) Draadloze externe PIRProductbeschrijving Dahua Draadloze PIR bewegingsmelder DHI ARD2251E W2(868) ondersteunt maskering en bewegingsdetectie, waardoor pogingen om het apparaat te verwijderen worden voorkomen. Het is mogelijk om cameramodules te installeren voor videobevestiging. Hij biedt bescherming tegen dieren tot 80 cm en 40 kg en bewaakt de omgevingstemperatuur. Tweerichtingscommunicatie en frequentieverspringing zorgen voor een stabiele en betrouwbare communicatie
Productbeschrijving
Dahua Draadloze PIR-bewegingsmelder DHI-ARD2251E-W2(868) ondersteunt maskering en bewegingsdetectie, waardoor pogingen om het apparaat te verwijderen worden voorkomen. Het is mogelijk om cameramodules te installeren voor videobevestiging. Hij biedt bescherming tegen dieren tot 80 cm en 40 kg en bewaakt de omgevingstemperatuur. Tweerichtingscommunicatie en frequentieverspringing zorgen voor een stabiele en betrouwbare communicatie met de alarmhub. Cloudupdates en updates op afstand via de mobiele app worden ondersteund, met dubbele redundantie en automatisch herstel in geval van mislukte updates.
Specificaties
| Indicatielampje | 1 × groene alarmindicator |
| Knop | 1 × aan/uit-schakelaar; 1 × schakelaar voor het aanpassen van het detectiebereik |
| Op afstand updaten | Cloud-update |
| Detectie van een lege batterij | Ja |
| Sabotage | Sabotage alarm |
| Bewegingsdetectie | Ja |
| Detectiemodus | PIR + Microgolf |
| Gevoeligheid | PIR: 3 niveaus instelbaar |
| Detectiebereik | Hoek: 90° Bereik: 15 m (49,21 ft), de installatiehoogte is 1 m (3,28 ft) |
| Detectiesnelheid | 0,3 m/s–2 m/s |
| Microgolffrequentie | 24G |
| Immuniteitsniveau van huisdieren | <80 cm (2,62 ft), ongeveer 40 kg (88,19 lb) |
| Weerstandsniveau wit licht | 10.000 lux |
| Anti-maskering | Ja |
| Tweeweg digitale temperatuurcompensatie | Ja |
| Scenario | Buiten, binnen |
| Bedrijfsstroom | 20 uA |
| Alarmstroom | Zonder camera: 26 mA (gemiddeld); 250 mA (maximaal) Met camera 's nachts: 380 mA (gemiddeld); 1,5 A (maximaal) |
| Draaggolffrequentie | 868,0 MHz–868,6 MHz |
| Zendervermogen (EIRP) | Limiet 25 mW |
| Communicatiemechanisme | Tweerichtingsverkeer |
| Communicatie afstand | RF: Tot 1.600 m (5.249,34 ft) in een open ruimte |
| Encryptiemodus | AES128 |
| Frequentieverspringing | Ja |
| Stroomvoorziening | CR123Ax4 |
| Levensduur van de batterij | Zonder camera: 5 jaar (activeert 10 alarmen per dag) Met camera: 3,5 jaar (activeert alarmen twee keer per week) |
| Bedrijfstemperatuur | –25 °C tot +60 °C (–13 °F tot +140 °F) |
| Bedrijfsvochtigheid | 10%–90% (RV) |
| Productafmetingen | 211 mm × 106 mm × 94 mm (8,31" × 4,17" × 3,7") |
| Installatiehoogte | 0,8 tot 1,3 m |
| Netto gewicht | 651 gram (1,44 pond) |
| Brutogewicht | 890 gram (1,96 pond) |
| Installatie | Muurbevestiging, paalbevestiging |
| Behuizingsmateriaal | PC + vriendin |
| Bescherming | IP66 |
| Certificeringen | CE |
| Corrosiewerend niveau | Basisbescherming |
| Opslagtemperatuur | –25 °C tot +60 °C (–13 °F tot +140 °F) |
| Verpakkingsafmetingen | 251 mm × 116 mm × 119 mm (9,88" × 4,57" × 4,69") |
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
4.9 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Great value
Color: Black/White/Silver-Tone
This has to be the best watch on the market for the money. It's low profile, easy to read, super classic and just looks great with everything. I have small wrists so this is the perfect size, not too intrusive, plus I can easily change out the band to switch up colors. I get so many compliments.
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Reviewed in the United States on January 6, 2026
★★★★★ 4
Good watch for daily regular wear
Color: Black/White/Silver-Tone, Color: Black/White/Silver-Tone
The item was delivered 2 days earlier than the estimated time. The watch was not well secured. It had fell out inside the small box, but fortunately there was no external or internal damage to the watch. The watch looks nice. I like the simple and clean design of it. The second hand ticking sound is noticeable if your surrounding is very quiet, but it doesn’t bother me cause I have had analog watches before and I the ticking sound is on a similar decibel level. Just be aware this watch is not made in the US (see pictures), but it’s not a dealbreaker for me. The strap gets the job done. I have a small wrist and the strap size is perfect. However, be aware the quality of the strap is very standard. There was noticeable frizz at the end of the strap and around the holes. Had to use a lighter to carefully trim the frizz (hence minus 1 star).
Timex claimed the battery life is 3 years, but that remain to be seen.
Overall, this is a good watch for every day regular wear. For more former wear you can just change the watch band.
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Reviewed in the United States on June 3, 2025
★★★★★ 5
I love it!
Color: Black/White/Silver-Tone
I have had this watch for 1.5 years now. I bought it for a trip to Venice, which operates on military time. It was hard to find a nice analog watch with military time...this one was the clear winner! I LOVE IT! It has always been super-dependable for correct time, and the little light makes it readable every time!! The band it comes with looks very nice, but it's really not a permanent band. I bought a silver expandable band on amazon, and I am super-happy with the combo. Do check it over for defects and have them replace it if anything's wrong (I did this initially because the light stopped working) but don't be afraid to try them again. They will take care of you.
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Great little watch that I am. happy to recommend.
Color: Black/White/Silver-Tone
I kept searching for a good simple hardworking, easy-to-read watch and Amazon kept leading me to these no name nurses watches. Well they did not last. Finally I got smart and searched by putting Timex watch and found this little beauty. This watch is perfect. It's easy to read, it has a glow light so I can check it in the dark, seems to be waterproof, and it takes a licking and keeps on ticking. It even looks nice.
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Reviewed in the United States on July 6, 2025
★★★★★ 3
Strap fabric fraying around holes after 2 days. Could have been perfect with better strap fabric.
Color: Black/White/Silver-Tone
Exactly the kind of watch I’ve been looking for. For me, it would be the perfect watch. It looks great and is lightweight enough that I don’t notice it on my wrist. Except the watchband fabric seems rather cheap and is fraying around the holes after only 2 days of wearing it. I can’t see how it’s going to last even a year, and I’m unable to find a replacement strap in the correct width.
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Reviewed in the United States on November 3, 2025