Description
Dahua ARD821-W2(868) Wireless Panic Button
The Dahua ARD821-W2(868) is a wireless panic button designed for fast emergency alarm activation. It is a simple and practical accessory for Dahua wireless alarm systems, suitable for homes, offices, retail counters, reception areas, clinics and other sites where quick assistance may be needed.
This model supports two-way wireless communication, AES128 encryption, accidental press prevention, app-based battery level display and an IP54-rated housing for dependable day-to-day use.
Key Features
- Wireless panic button for fast emergency activation
- Two-way RF communication
- Up to 1,200 m transmission distance in open space
- AES128 encrypted communication
- Frequency hopping for stable wireless performance
- Low battery detection
- Battery level display in the app
- Accidental press prevention
- LED indicator for status display
- IP54 rated housing
Ideal For
- Homes and apartments
- Retail stores and counters
- Reception desks
- Offices and warehouses
- Clinics and consulting rooms
- Aged care or assisted living environments
Why Choose the ARD821-W2(868)?
If you need a simple wireless emergency button that works within the Dahua alarm ecosystem, this model is a strong choice. It is compact, easy to use and designed to provide reliable alarm signalling when urgent help is needed.
Specifications
| Model |
ARD821-W2(868) |
| Product Type |
Wireless Panic Button |
| Button |
1 |
| Indicator Light |
1 indicator |
| Carrier Frequency |
868.0 MHz to 868.6 MHz |
| Communication Distance |
Up to 1,200 m in open space |
| Communication Mechanism |
Two-way |
| Encryption |
AES128 |
| Frequency Hopping |
Yes |
| Low Battery Detection |
Yes |
| Battery Level Display |
Displayed in app |
| Protection Rating |
IP54 |
| Remote Update |
Cloud update |
Frequently Asked Questions
What is the Dahua ARD821-W2(868)?
It is a wireless panic button used to trigger an alarm event quickly in an emergency.
Is this compatible with Dahua wireless alarm systems?
It is designed as a Dahua wireless alarm accessory and is intended for use within compatible Dahua alarm setups.
How far can it transmit?
Dahua lists a maximum communication distance of up to 1,200 metres in open space.
Does it support encrypted communication?
Yes, it supports AES128 encryption.
Can I check battery status?
Yes, it supports low battery detection and battery level display in the app.
Is it weather resistant?
It has an IP54 rating.
More Information
Add your official Dahua datasheet or manual links below.
