The Dahua HY-SA21A-W2(868) is a cutting-edge Wireless Smoke Alarm that utilizes innovative split-spectrum sensor technology to detect smoke more accurately, minimizing false alarms while ensuring safety. With a high-performance sound output exceeding 85 dB(A) at 3 meters, this alarm guarantees that you will be alerted promptly in case of fire, making it an essential addition to any home or business.


Featuring a test and silence function consolidated into a single button, the Dahua HY-SA21A-W2(868) offers effortless operation for users, enhancing convenience and usability. The device has been designed with a low quiescent current consumption, ensuring it remains energy-efficient while maintaining optimal performance. Additionally, the surface-mount device (SMD) circuit board design allows for reliable operation and durability over time.


Moreover, the low battery warning signal notifies users when the battery needs to be replaced, further enhancing the alarm's functionality. Dahua is renowned for its commitment to safety and security technology, and this smoke alarm exemplifies their dedication to protecting lives and property.