Dahua AirShield Wireless Alarm Smoke Detector
HY-SA21A-W2
FEATURES
• Split-spectrum sensor technology
• Test and silence features in one single button
• Loud sound output over 85 dB(A) at 3 meters
• Low quiescent current consumption
• Surface-mount device (SMD) circuit board design
• Low battery warning signal
Wireless Smoke Alarm_User's Manual_V1.0.0
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