DAHUA ARD821-W2 Wireless Panic Button
SKU: 22736993415

DAHUA ARD821-W2 Wireless Panic Button

Sale price$450000.00 Regular price$500000.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

DAHUA ARD821-W2 Wireless Panic ButtonARD821 W2 Wireless Panic Button > Two way RF communication. > Provides multiple LED colors to indicate different statuses. > Cloud update and automatic recovery from update failure. > Offers accidental press prevention. > Battery life up to 5 years if used twice a week. > IP54 rated. Product Data Function Indicator Light 1 for multiple statuses (pairing, communication, and more) Remote Update Cloud update Button 1 Signal Strength Yes Low Battery

ARD821-W2

Wireless Panic Button

> Two-way RF communication.
> Provides multiple LED colors to indicate different statuses.
> Cloud update and automatic recovery from update failure.
> Offers accidental press prevention.
> Battery life up to 5 years if used twice a week.
> IP54 rated.



Product Data

Function

Indicator Light

1 for multiple statuses (pairing, communication, and more)

Remote Update

Cloud update

Button

1

Signal Strength

Yes

Low Battery Detection

Yes

Battery Level Display

Displays battery level on app

Wireless

Carrier Frequency

433.1 MHz–434.6 MHz

Communication Distance

Up to 1,300 m (4,265.09 ft) in an open space

Communication Mechanism

Two–way

Encryption Mode

AES128

Frequency Hopping

Yes

General

Operating Temperature

–10 °C to +55 °C (+14 °F to +131 °F) (indoor)

Operating Humidity

10%–90% (RH)

Battery Model

CR2032

Battery Life

3 years (if used twice a week)

Product Dimensions

55 mm × 36 mm × 14.2 mm (2.17" × 1.42" × 0.56") (L × W × H)

Packaging Dimensions

95 mm × 59.5 mm × 30.5 mm (3.74" × 2.34" × 1.20") (L × W × H)

Installation

Wall mount; portable

Net Weight

18 g (0.04 lb)

Gross Weight

48 g (0.11 lb)

Certifications

CE

Casing Material

PC + ABS

Protection

IP54

Technical

Operating Current

28 mA

Test Mode

Yes

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: 22736993415

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 1570 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Betty D
Natrona Heights, US
★★★★★ 5
Easy hanging
Size: 31x7 2Pcs, Color: Black
Great size and easy to hang. Have purchased many for my home.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
D
Verified Purchase
David S.
Port Orchard, US
★★★★★ 5
Look great!
Size: 40x7 2Pcs, Color: Black
Love the way these turned out in my office! I connected 3 shelves in a row across the wall to make one long shelf and it looks great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
C
Verified Purchase
Chris snyder
Los Angeles, US
★★★★★ 3
Nice looking. Not very sturdy. Easy to install.
Size: 40x7 2Pcs, Color: White, Size: 40x7 2Pcs, Color: White
Update: The shelf slopes at about a 45° angle when you put anything more than about a pound on the outside edge of it. Perfectly fine up against the wall. Just seems like the braces inside aren't long enough to really give the stability needed. Bracket is nice and tight against the wall. Had to add braces underneath to hold a small plant, a photo and a small container. Wa sloping more and more each week The shelves look great and we're pretty easy to install. They have a single bracket that is very easy to mount to the wall and get nice and level.. The downside is that the bracket isn't long enough to go between studs. This seems like a pretty simple oversight. I mean why wouldn't you make it long enough to go stud to stud? Secondly and maybe more fatally the bars that go inside the shelf to support them coming out from the wall are significantly shorter than the depth of the shelf. Unfortunately this means the shelf is only supported the first few inches coming out from the wall so there is the potential for a slight lean forward.. The anchors they send are trash. Cheap soft plastic that just tears and bends with a screwdriver. I would suggest spending $2 and grabbing your own anchors from Ace or home Depot. The shelves are essentially made of a high grade cardboard kind of wood. They are not going to support much weight or last for years and years however there incredibly affordable and look nice and easy to install. Long as your expectations are right you'll be happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2023
J
Verified Purchase
Janice Amidon
Birmingham, US
★★★★★ 5
Great product.
Size: 24x6 2Pcs, Color: Black
Very good sturdy item
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
S
Verified Purchase
SmartLady
Pawtucket, US
★★★★★ 5
Would buy again and again
Color: Black, Size: 35.4 Inches
These are beautiful! I thought they’d be hard to install, but very straightforward and easy. They are quality and sturdy. I staggered the shelves and they hold a lot. Great value for the quality. I will be buying more for another room in the house.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026

recommand products