SKU: 46794538160

DAHUA HY-SA21A-W2 Wireless Smoke Alarm

$347747.40 $386386.00
Save 10%
No.2 Bestseller on communitymontessori.net >

Pay in installments of $96596.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

DAHUA HY-SA21A-W2 Wireless Smoke AlarmHY SA21A W2 Wireless Smoke Alarm > Split spectrum sensor technology > Test and silence features in one single button > Loud sound output over 85 dB(A) at 3 meters > Low quiescent current consumption > Surface mount device (SMD) circuit board design > Low battery warning signal Product Data Working Principle Collection Type Smoke Sampling Period 10 s Sensor Type Photoelectric Alarm Alarm Type Smoke alarm, fault alarm, low battery warning Alarm Volume

HY-SA21A-W2

Wireless Smoke Alarm

> Split-spectrum sensor technology
> Test and silence features in one single button
> Loud sound output over 85 dB(A) at 3 meters
> Low quiescent current consumption
> Surface-mount device (SMD) circuit board design
> Low battery warning signal



Product Data

Working Principle

Collection Type

Smoke

Sampling Period

10 s

Sensor Type

Photoelectric

Alarm

Alarm Type

Smoke alarm, fault alarm, low battery warning

Alarm Volume

85dB–90dB(A) at 3 m (9.84 ft)

Alarm Mode

Visual and audible alarm

Silence Function

Yes

Silence Duration

About 12 min

Alarm Response Threshold

0.2 dB/m - 0.3 dB/m

Basic Parameters

Indicator Light

Red and green LED indicator

Led Instructions

Standby: Green indicator flashes once per minute
Alarm: Red indicator flashes once per second
Fault: Red indicator flashes once per minute

Low battery warning: Red indicator flashes once per minute

Coverage Area

When the height of the space is less than 8 m (3.28 ft), the protection area of a device is 20 m2–40 m2

Power Supply

Battery Life

3 year

Operating Voltage

3V CR123A lithium battery (replaceable)

Operating Current

Monitoring current: ≤ 35uA
Alarm current: ≤ 35mA

Operating Ambient

Operating Environment

Indoor

Operating Temperature

-10°C to +55°C (+14°F to +131°F)

Operating Humidity

≤ 95% RH (non condensing)

Appearance

Color

White

Casing

ABS

Dimensions

φ98 mm × H43.1 mm (φ3.85" × H1.70")

Weight

140 g (0.30 lb)

Installation

Ceiling Mount

Certifications

Certifications

TÜV and CE listed

Compliance Standard

EN 14604:2005+AC:2008

Wireless

Carrier Frequency

433.1 MHz–434.6 MHz

Communication Distance

Up to 1000 m (3280.84 ft) in an open space

Communication Mechanism

Two-way

Frequency Hopping

Yes

Encryption Mode

AES128
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 46794538160

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 19 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
Kindle Customer
West Palm Beach, US
★★★★★ 5
Good dupe !
Color: Glistening Bronze
Surprisingly very good! The shimmer last and the glow appears on the skin. Compared to makeup store ones for 10x the price this one works so much better!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
P
Prime and Polished
Carnegie, US
★★★★★ 4
Body Shimmer Oil with SPF
Color: Glistening Bronze, Color: Glistening Bronze
This body shimmer oil with SPF is perfect for the upcoming summer nights out and vacation days!! This adds just a bit of a glow, shimmer and color which will be perfect for shoulders, decolletage and/or back in your strappy summer outfits. This also includes SPF 45 which is a fantastic addition to keep your skin protected from the summer UV rays! A little bit of this goes a long way, so you receive a generous amount that should last you a while! Beautiful way to add a radiant glow to your skin while protecting your skin health.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
A
Verified Purchase
alice
Chelsea, US
★★★★★ 3
It wasn’t coming out
Color: Glistening Bronze
It refuse to come out like it was jammed but the color and the texture is nice
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
C
Chae
Massapequa, US
★★★★★ 5
Great quality for the price!
Color: Glistening Bronze
This body shimmer oil gives a really nice sun-kissed glow without looking overly glittery. The shimmer is subtle and smooth, so it catches the light in a flattering way instead of looking chunky or artificial. It works especially well on areas like the shoulders, collarbones, and legs for that summer glow effect. The texture is lightweight and absorbs nicely into the skin. It doesn’t feel greasy, and it leaves the skin feeling soft and moisturized after applying. The bronze shade adds a warm tone that enhances natural skin color while still looking natural. It’s also pretty versatile. You can use it on its own for a glowing finish or mix a small amount with foundation, lotion, or sunscreen to add a bit of radiance. It blends easily and spreads evenly, so a little goes a long way. The result is smooth, hydrated skin with a subtle luminous shine that looks great in sunlight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
C
Customer Review
Pawtucket, US
★★★★★ 4
Glowy but not sure about the spf
Color: Glistening Bronze
My first impression was that this works more like a basic body shimmer than anything else. The Glistening Bronze shade gives a noticeable glow, especially on arms and shoulders. It spreads easily and adds a warm shimmer in the light, but the overall effect feels pretty simple and more cosmetic than skincare focused. In use, the oil blends in smoothly and feels lightweight on the skin. It does leave a bit of moisture behind, similar to a light body oil, and the shimmer shows up well outdoors. The bronze tone is fairly deep, so it seems better suited for medium to darker skin tones or anyone who wants a stronger bronzed glow. The product mentions SPF 45, but there is very little information about the sun protection side of it, so I personally treat this more like a shimmer oil than a sunscreen. Overall, this is fine if you are mainly looking for a body shimmer that adds glow and a bronzed look. It does the job of giving skin a subtle shine and a bit of hydration, but it does not stand out as anything particularly special. I would recommend it mostly for people who want a simple shimmering body oil rather than relying on it for sun protection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026

recommand products

Sunglass Case
140.00
CHANEL 3440H C622
232.50
Chanel 5525 1656/T8
282.50
DISNEY DONALD DUCK SET OF 2 STORAGE BOXES
12.99
Gucci GG1579S 001
184.99