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Description
Dahua DHI-HY-SA21A-W2(868) AirShield Draadloze RookmelderProductbeschrijving Dahua Wireless Smoke Alarm biedt batterijgevoede rookdetectie en alarmfuncties in n unit. Geavanceerde elektronica in combinatie met een foto elektrische rookdetectiekamer zorgen voor vroege detectie van rook en hoge immuniteit tegen ongewenste alarmen. Dit soort rookmelder heeft geen netvoeding nodig en is geschikt voor algemene residentile toepassingen. Tijdige melding van de rookmelder kan in realtime worden weergegeven op de
Productbeschrijving
Dahua Wireless Smoke Alarm biedt batterijgevoede rookdetectie en alarmfuncties in één unit. Geavanceerde elektronica in combinatie met een foto-elektrische rookdetectiekamer zorgen voor vroege detectie van rook en hoge immuniteit tegen ongewenste alarmen. Dit soort rookmelder heeft geen netvoeding nodig en is geschikt voor algemene residentiële toepassingen. Tijdige melding van de rookmelder kan in realtime worden weergegeven op de DMSS-app.
Specificaties
| Verzamelingstype | Rook |
| Bemonsteringsperiode | 10 seconden |
| Sensor Type | Photoelectric |
| Alarmtype | Rookmelder, storingswaarschuwing, waarschuwing voor lege batterij |
| Alarmvolume | 85dB–90dB(A) op 3 m (9,84 ft) |
| Alarmmodus | Visueel en hoorbaar alarm |
| Stiltefunctie | Ja |
| Stilteduur | Ongeveer 12 min |
| Alarmresponsdrempel | 0,2 dB/m2 - 0,3 dB/m2 |
| Indicatielampje | Rode en groene LED-indicator |
| Led-instructies | Stand-by: Groene indicator knippert eenmaal per minuut Alarm: Rode indicator knippert eenmaal per seconde Storing: Rode indicator knippert eenmaal per minuut Waarschuwing voor lage batterij: rode indicator knippert eenmaal per minuut |
| Dekkingsgebied | Wanneer de hoogte van de ruimte minder dan 8 m (26,25 ft) bedraagt, bedraagt het beschermingsgebied van een apparaat 20 m 2 -40 m 2 |
| Levensduur van de batterij | 3 jaar |
| Bedrijfsspanning | 3V CR123A lithiumbatterij (vervangbaar) |
| Bedrijfsstroom | Bewakingsstroom: ≤ 35uA Alarmstroom: ≤ 35mA |
| Bedrijfsomgeving | Binnen |
| Bedrijfstemperatuur | -10°C tot +55°C (+14°F tot +131°F) |
| Bedrijfsvochtigheid | ≤ 95% RV (niet condenserend) |
| Kleur | Wit |
| Behuizing | ABS |
| Afmetingen | φ98mm × H43,1mm (φ3,85" × H1,70") |
| Gewicht | 140 gram (0,30 pond) |
| Installatie | Plafondmontage |
| Certificeringen | TÜV en CE-gecertificeerd |
| Nalevingsnorm | EN 14604:2005+AC:2008 |
| Draaggolffrequentie | 868 MHz–868,3 MHz |
| Communicatie afstand | Tot 1000 m (3280,84 ft) in een open ruimte |
| Communicatiemechanisme | Tweerichtingsverkeer |
| Frequentieverspringing | Ja |
| Encryptiemodus | AES128 |
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
4.1 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Perfect Fit and Great Quality!
Color: Light Royal Blue, Size: 16, Color: Light Royal Blue, Size: 16
I bought this suit set for my grandson, and it exceeded all expectations. The fit was absolutely perfect—true to size and very flattering. The material feels high-quality and well-made, with attention to detail in the stitching and finish. He looked so sharp and felt comfortable wearing it, which made the occasion even more special. Highly recommend this set for any formal event!
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Reviewed in the United States on October 29, 2025
★★★★★ 5
Great value
This suit was the cutest for my son’s graduation. He is slim enough to fit a 5 but tall enough for a 6. I did get size 5, it fit good, except the vest was a bit on the smaller side. Luckily my boy is skinny. The quality is great. Definitely get your moneys worth. The only con I have is that this item was definitely worn before & likely returned to Amazon. The shirt was wrinkled and not packaged like a “new item”. It was in a regular plastic. You can see in the photo the wrinkles on the shirt sleeves.
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Reviewed in the United States on May 31, 2025
★★★★★ 4
Nice suit
This 5 piece set is really nice
Pros:
fits true to sz which allows it to sit nicely
The pants have adjustable waist bands
The color is as described
Material/fabric is not that great but will do (select a neutral color which can prevent it from looking cheap)
Perfect for a growing boy who will need another one soon
Cons:
The tie is little short and is a non adjustable elastic
the handkerchief/pocket square does not fit in the faux pocket.
If you want an elevated look - wear with a different tie, thicker fabric white shirt and nice shoes
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Order a sewing machine too
Color: Light Champagne, Size: 14, Color: Light Champagne, Size: 14
This suit had me questioning whether the manufacturer had ever actually seen a human child before. The pants were SO long — like they were tailored for a 9-year-old with 100 feet of shin. 😂 I had to hem them significantly just to make them wearable for a normal boy.
The bow tie was also a letdown. Ours may have arrived defective, but it only seemed to have one hook with nowhere for it to actually attach, so we ended up improvising with the fabric loop. Not exactly the polished wedding-ready moment I was hoping for.
The shirt was probably the highlight. It has a subtle textured pattern that makes it feel a little more unique than a standard dress shirt, which I appreciated. Unfortunately, the fabric itself is stiff and not particularly comfortable. Overall, the whole set feels pretty cheap quality-wise.
BUT… he’s 9. He’ll outgrow it before the next wedding invitation hits the mailbox anyway. 😂 For one day of looking like a dashing young gentleman instead of a tiny tornado in sweatpants, it got the job done. Just definitely not something I’d recommend for peak summer wedding season unless your child enjoys marinating in polyester.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Loved it
Color: Deep Gray, Size: 10, Color: Deep Gray, Size: 10
Pretty good fit on my son. I'd say it's true to size. He looked great for his guitar recital.
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Reviewed in the United States on February 16, 2026