Dahua AirShield Series Wireless Smoke Detector White 40m Detection - DHI-HY-SA21A-W2 Accessories_HDMI Extenders Category Specification System Processor: Embedded

Category Specification System Processor: Embedded LED controller

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Durable Construction – Made from premium aluminum alloy with a black surface spray finish for long-term corrosion resistance and a modern look

Historical reports can also support operational planning and compliance with occupancy guidelines

Dahua AirShield Series Wireless Smoke Detector White 40m Detection - DHI-HY-SA21A-W2 Accessories_HDMI Extenders Category Specification System Processor: EmbeddedThe Dahua DHI HY SA21A W2 is a battery powered wireless smoke alarm designed to deliver fast, reliable smoke detection for residential environments. Featuring advanced split spectrum photoelectric sensor technology, it minimizes false alarms while providing timely alerts via loud siren and real time DMSS app notifications. Key Features Photoelectric Split Spectrum Sensor for early and accurate smoke detection Loud 8590 dB Alarm at 3 meters with both