1)Easily mounted by ahdesive tape;
2)Magnetic sensor ;
3)Opetrated by 3 pcs 1.5V button cell;
4)Alarm volume: >=90dB
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1)Easily mounted by ahdesive tape; 2)Magnetic sensor ; 3)Opetrated by 3 pcs 1.5V button cell; 4)Alarm volume: >=90dB |