Dahua Airshield ARD821-W2 panic button with wall mount

Dahua Airshield ARD821-W2 — Wall-Mounted Emergency Button

In critical situations where a rapid response can make all the difference, having a reliable device to instantly signal an issue is essential. The Dahua Airshield ARD821-W2 is an intuitive wireless panic button operating at 868 MHz, designed to detect and transmit alarms in various scenarios, including break-ins, fires, or medical emergencies. With a range of up to 1,400 m in open space and a battery life of up to 5 years under normal use, this button is an ideal solution for homes, offices, and specialized workplaces. Its IP54 dust and water resistance ensures reliable operation even in challenging conditions.

Reliability and Security First

The Dahua Airshield ARD821-W2 features AES128 encryption to protect communication against unauthorized access and utilizes two-way communication to confirm signal receipt. A frequency hopping function enhances interference resistance, ensuring maximum transmission reliability. The button also supports remote cloud updates, simplifying maintenance and ensuring the device is always up to date.

Easy Installation and Use

The button is equipped with an LED status indicator that provides visual feedback on its operational status. Thanks to its compact dimensions of 55 x 36 x 14.2 mm and lightweight plastic design, it can easily be mounted on a wall or used as a key fob. It is powered by a standard CR2032 battery that is easy to replace. An operating temperature range of -10 to +55°C allows for use in various climatic conditions.

Technical Specifications

• Module type: Panic button + key fob
• Transmission frequency: 868.0 - 868.6 MHz
• Range (open space): Up to 1400 m
• Number of buttons: 1
• Power supply: 1x CR2032 battery
• Material: Plastic
• Dimensions: 55 x 36 x 14.2 mm
• Operating temperature: -10 to +55°C
• Ingress protection: IP54
• Battery life: Up to 5 years (2 uses per week)
• Encryption: AES128
• Communication: Two-way

The Dahua Airshield ARD821-W2 is an ideal choice for those seeking a simple yet effective solution for ensuring safety and enabling immediate notification of emergency situations.