About this item

• Applicable to multiple -- Easily mounted by adhesive. Type to window or door. Ideal entry warning for homes,apartments,mobile homes,offices,hotel rooms,garages,and more！
• Easy to use -- Magnetic alarm switch detects your door or window.Easy stick installation and operation, press on/off switch to power on/off then insert 2 PCS AAA battery (battery do not contain in the box),tear the double-sided adhesive on the backpack, paste the door knob alarm on your target position.
• Super loud 90 dB alarm -- When someone opens the door or window illegally (the relative position of the primary and secondary parts changes), the alarm can issue a strong alarm, warning the intruder to leave and remind the owner. prevent kids and babies going out the house, protecting your home or office whether you are in or out.
• High quality -- Super suitability and stability. 100% New and high quality
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