DAHUA DHI-ARD821-W2 AirShield Wireless Panic Button 433MHz IP54 Emergency Alert

Overview

The DAHUA DHI-ARD821-W2 delivers instant emergency alerts through secure 433MHz wireless communication with AES128 encryption. This compact panic button supports intrusion, fire, gas leak, and medical emergency scenarios with multi-color LED status feedback. Accidental press prevention ensures reliable operation in busy indoor environments including homes, offices, and care facilities. The IP54-rated housing withstands dust and water splashes while the CR2032 battery provides up to 3 years of service. Flexible mounting options include wall brackets, straps, and portable carrying for immediate access during emergencies. Two-way encrypted communication maintains signal stability through frequency hopping technology for interference-free operation.

Communication Frequency: 433.1–434.6 MHz
Encryption Standard: AES128
Battery Type: CR2032
Battery Life: Up to 3 years (2 presses/week)
IP Rating: IP54 (dust/splash resistant)
Dimensions: 2.17" × 1.42" × 0.56"
Net Weight: 0.04 lb
Operating Temperature: 14°F to 131°F (indoor use)
Communication Range: Up to 2,625 ft open space
LED Indicator: Multi-color status feedback

Key Features & Technical Specifications