Dahua Alarm Wireless Panic Button ARD821-W2(868) (With bracket)

• Two-way RF communication
• Provides multiple LED colors to indicate different statuses
• Cloud update and automatic recovery from update failure
• Offers accidental press prevention
• Battery life up to 5 years if used twice a week
• IP54 rated

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 in an open space
• Communication Mechanism : Two–way
• Encryption Mode : AES128
• Frequency Hopping : Yes

General

• Operating Temperature : –10 °C to +55 °C (indoor)
• Operating Humidity : 10%–90% (RH)
• Power Supply : 1 × CR2032
• Battery Life : 5 years (if used twice a week)
• Product Dimensions : 55 mm × 36 mm × 14.2 mm (L × W × H)
• Packaging Dimensions : 95 mm × 59.5 mm × 30.5 mm (L × W × H)
• Installation : Wall mount; portable
• Net Weight : 18 g
• Gross Weight : 48 g
• Certifications : CE
• Casing Material : PC + ABS
• Protection : IP54

Technical

• Operating Current : 28 mA
• Test Mode : Yes