AirShield Wireless Smoke Alarm

The Dahua DHI-HY-SA21A-W2(868) wireless smoke alarm is designed for accurate fire detection in residential and commercial settings. Equipped with split-spectrum sensing technology, it ensures early and precise smoke detection while minimizing false alarms. Its compact design and wireless capabilities allow for flexible installation without complex wiring.

Key Features:

• Split-spectrum photoelectric sensor for enhanced smoke detection

• One-button test and hush function

• Loud alarm output exceeding 85dB(A) at 3 meters

• Low power consumption with up to 3 years battery life

• SMD circuit board design

• Low battery warning signal

• Real-time alerts via Dahua DMSS mobile app

Specifications:

• Dimensions: φ98 mm × H 43.1 mm

• Weight: 140g

• Material: ABS Plastic

• Color Options: White

• Power Requirements: 3V CR123A Lithium Battery (replaceable), up to 3 years battery life

• Other Specifications:

  • Sensor Type: Photoelectric

  • Sampling Period: 10 seconds

  • Alarm Sound Level: 85–90dB(A) at 3 meters

  • Alarm Modes: Visual (LED indicators) and Audible alerts

  • Hush Duration: Approx. 12 minutes

  • Alarm Response Threshold: 0.2dB/m – 0.3dB/m

  • Operating Temperature: -10°C to +55°C

  • Operating Humidity: ≤95% RH (non-condensing)

  • Wireless Frequency: 868MHz - 868.3MHz

  • Communication Distance: Up to 1000m in open space

  • Communication Mechanism: Two-way with frequency hopping

  • Encryption Mode: AES128

  • Certifications: TÜV and CE certified, compliant with EN 14604:2005+AC:2008