Description: The wireless online smoke alarm can be included in the same system
by a LEARN button. When one of the detectors alarms, it emits the
high frequency digital signal (433.92MHZ), the others receive the
same signal and will alarm together to remind users to take
measures. Specifications: 1) Power source: One 9V battery, three 1.5VAA 2) Quiescent current: 80uA 3) Temperature: -10℃ ~ +40℃ 4) Frequency: 433.92MHZ 5) Alarm decibel85dB/3m 6) Size: (diameter) 128x 50mm. Learn more about products detailed description, pricing and
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