Dahua DHI-ARD821-W2(868) Wireless Panic Button

DHI-ARD821-W2(868) Wireless Panic Button

Wireless panic button. Bidirectional RF communication. Provides multiple LED colors to indicate different statuses. Cloud update and automatic recovery from failed updates. Provides prevention against accidental pressing. Battery life up to 5 years when used twice a week. Suitable for IP54.

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 - 868.0 MHz–868.6 MHz
• Communication Distance - Up to 1,400 m (4,593.18 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 - 5 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 - 18g (0.04lb)
• Gross Weight - 48g (0.11lb)
• Certifications - CE
• Casing Material - PC + ABS
• Protection - IP54
  
  Technical
• Operating Current - 28 mA
• Test Mode - Yes