Dahua HY-SA21A-W2(868)

Airshield Wireless Alarm Smoke Detector

Wireless smoke detector using photoelectric (optical) sensing technology, audible alarm, secure long-range communication for reliable fire detection, White

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Key Features

  • Wireless smoke detector for indoor fire detection and alarm system integration
  • Photoelectric (optical) smoke sensing with split-spectrum technology for early detection and reduced false alarms
  • Loud audible alarm output ≥85dB at 3m for clear warning indication
  • LED indicators for status and alerts
  • Test and silence function via single button for easy operation
  • Alarm types include smoke alarm; fault warning;and low battery alert
  • Coverage area 20–40m² (ceiling height <8m) for typical room protection
  • Sampling period 10s ensuring continuous monitoring
  • Two-way wireless communication with frequency hopping for stable transmission
  • AES128 encryption protecting secure wireless communication
  • Wireless range up to 1000m in open space for flexible installation
  • Low quiescent current design for energy-efficient operation
  • Low battery warning ensuring reliable long-term operation
  • Battery-powered using CR123A 3V battery with up to 3-year life
  • Ceiling-mounted compact design suitable for indoor environments
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