Dahua ARD821-W2 Wireless Panic Button, IP54, 868 MHz
Dahua ARD821-W2 868 MHz wireless panic button with accidental-press protection, wall or portable use, 1,200 m range, IP54 and CR2032 battery for 3 years.
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Dahua ARD821-W2 Wireless Panic Button, IP54, 868 MHz
The Dahua ARD821-W2 is a single-button wireless panic alarm for Dahua AirShield alarm hubs. It combines accidental-press prevention, wall or portable mounting, IP54 protection and two-way 868 MHz radio with up to 1,200 m range. It suits counters, reception desks and bedsides where staff or family need a discreet emergency button.
Main Specs
- Single panic button with accidental-press prevention
- Wall mount (under a desk) or portable
- Two-way 868 MHz radio, up to 1,200 m open space
- AES128 encryption, frequency hopping
- Battery: CR2032, about 3 years (pressed twice a week)
- Battery level shown in the app
- IP54 protection
- Size: 55 x 36 x 14.2 mm, 18 g
- EN 50131 Security Grade 2
- Ideal for discreet emergency buttons at counters and desks
Main Characteristics
Brand
Dahua
Model
DHI-ARD821-W2(868)
Product Type
Wireless panic button
Buttons
1
Carrier Frequency
868.0-868.6 MHz
Communication Mechanism
Two-way
Encryption
AES128
Frequency Hopping
Yes
Communication Distance
Up to 1,200 m in open space
Battery Model
CR2032
Battery Life
3 years (used twice a week)
Protection
IP54
Dimensions
55 x 36 x 14.2 mm
Net Weight
18 g
Installation
Wall mount, portable
Environment
Indoor, -10 Β°C to +55 Β°C
Certifications
CE, EN 50131 Grade 2, Environmental Class II
