Dahua ARD821-W2(868) Wireless Panic Button

Dahua ARD821-W2(868) Wireless Panic Button The Dahua ARD821-W2(868) is a wireless panic button designed to provide immediate emergency alarm activation within Dahua AirShield wireless security systems. With a single press, users can instantly trigger an alarm and notify designated responders, making it ideal for personal safety, medical assistance requests, and emergency security situations. Its compact and portable design allows it to be carried as a pendant, worn on a lanyard, or mounted in a fixed location for quick access. Featuring secure two-way wireless communication, AES128 encryption, and long battery life, the panic button delivers dependable emergency signalling in residential, commercial, healthcare, and assisted-living environments. Features: One-touch emergency alarm activation Compatible with Dahua AirShield wireless alarm systems Two-way wireless communication AES128 encrypted transmission Frequency hopping technology for enhanced reliability Portable and lightweight design Wearable as a pendant or lanyard Wall-mountable installation option LED status indication Signal strength monitoring Low battery notification Cloud firmware updates via compatible alarm hub Water-resistant design for everyday use Specifications: Product Type: Wireless Panic Button Function: Emergency Alarm Trigger Wireless Frequency: 868.0 MHz – 868.6 MHz Communication Type: Two-Way RF Communication Communication Range: Up to 1,400m (Open Space) Encryption: AES128 Frequency Hopping: Yes Status Indicator: LED Indicator Battery Type: CR2032 Lithium Battery Battery Life: Up to 5 Years Low Battery Detection: Yes Signal Strength Detection: Yes Tamper Protection: Yes Installation Options: Portable, Pendant, Wall Mount Operating Temperature: -10°C to +55°C Operating Humidity: Up to 95% RH (Non-Condensing) Dimensions: Approximately 55 × 36 × 16.2mm Weight: Approximately 25g