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First, drive the expansion bolts and nails into the wall hole, leave a part of the space, and fix the position of the nail. Aim the alarm at the nail and then hang it in. When the buckle inside the alarm touches the nail, push the alarm down and snap the nail into the buckle to trigger activation. When the alarm emits three beeps, and the flashing of the LED light indicates that the activation is complete, the green light will flash continuously during normal operation. You can also check whether it is working normally by pressing the test button.







