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Dahua · Alarms

Dahua DHI-ARD821-W2 Wireless Panic Button

Model / SKU: DHI-ARD821-W2

Dahua DHI-ARD821-W2 Wireless Panic Button. The Dahua DHI-ARD821-W2 Wireless Panic Button is a versatile safety device designed for both residential and commercial use. It operates on a two-way RF communication system, ensuring reliable and instant alerts in emergencies. With a range of up to 1,300 meters in open spaces, users can activate the panic button from a significant distance. The button features multiple LED indicators, providing visual feedback on its status, including pairing and communication. Additionally, the device supports cloud updates and has mechanisms to recover from update failures, enhancing its reliability. Accidental activation is minimized through thoughtful design, making it safe for various environments. Rated IP54 for water and dust resistance, it can withstand everyday conditions. The button runs on a CR2032 battery, offering a lifespan of approximately three years with typical usage. Its compact design allows for easy installation, either wall-mounted or portable. Overall, this panic button serves as an essential tool for emergency situations, giving users peace of mind in their homes or workplaces​. Key Features Two-way RF communication. Provides multiple LED colors to indicate different statuses. Cloud update and automatic recovery from update failure. Offers accidental press prevention. IP54 rated. DHI-ARD821-W2 Datasheet The Dahua DHI-ARD821-W2 Wireless Panic Button is a critical safety device designed to provide immediate assistance in emergency situations. Featuring a robust two-way RF communication system, it ensures a reliable connection within a range of up to 1,300 meters in open environments. The button is equipped with multiple LED indicators that convey various statuses, such as pairing and communication. To enhance user experience, it incorporates cloud update capabilities, allowing for seamless software upgrades and automatic recovery from any potential failures. Designed with safety in mind, the panic button includes features that prevent accidental activation. It boasts an IP54 rating, ensuring protection against dust and splashes of water, making it suitable for diverse settings. Powered by a CR2032 battery, the device can last up to three years under regular usage conditions, minimizing maintenance needs. Its compact size allows for versatile installation options, whether wall-mounted or handheld, ensuring accessibility at all times. Ideal for homes, offices, and retail environments, the DHI-ARD821-W2 serves as a vital tool for emergency preparedness, providing users with peace of mind. Dimension Application Technical Specifications Function Indicator Light 1 for multiple statuses (pairing, communication, and more) Remote Update Cloud update Button 1 Signal Strength Yes Low Battery Detection Yes Battery Level Display Displays battery level on app Wireless Carrier Frequency 433.1 MHz–434.6 MHz Communication Distance Up to 1,300 m (4,265.09 ft) in an open space Communication Mechanism Two–way Encryption Mode AES128 Frequency Hopping Yes General Operating Temperature –10 °C to +55 °C (+14 °F to +131 °F) (indoor) Operating Humidity 10%–90% (RH) Battery Model CR2032 Battery Life 3 years (if used twice a week) Product Dimensions 55 mm × 36 mm × 14.2 mm (2.17″ × 1.42″ × 0.56″) (L × W × H) Packaging Dimensions 95 mm × 59.5 mm × 30.5 mm (3.74″ × 2.34″ × 1.20″) (L × W × H) Installation Wall mount; portable Net Weight 18 g (0.04 lb) Gross Weight 48 g (0.11 lb) Certifications CE Casing Material PC + ABS Protection IP54 Technical Operating Current 28 mA Test Mode Yes