The Dahua DHI-HY-SA21A-W2 is a wireless, battery-powered photoelectric smoke alarm featuring split-spectrum sensing technology, a test/silence single-button interface and loud output (over 85 dB at 3 m) — ideal for residential, rental or retrofit applications where mains wiring is undesirable.
Dahua DHI-HY-SA21A-W2 | Wireless Photoelectric Smoke Alarm – Battery-Powered, Split-Spectrum Sensor
$63.00
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