Lancoon 4 Pack Door Stop Alarm, 120Db Loud Portable Wedge Entrance Alert Anti Theft Burglar Safety Tools For Home Security Apart Darkroom Supplies * Sleep/Wake Technology: Automatically wakes

* Sleep/Wake Technology: Automatically wakes your eReader when opened and puts it to sleep when closed

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and sedentary alerts

Display Functions Include: Car Speed

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Lancoon 4 Pack Door Stop Alarm, 120Db Loud Portable Wedge Entrance Alert Anti Theft Burglar Safety Tools For Home Security Apart Darkroom Supplies * Sleep/Wake Technology: Automatically wakesHow To Use It? 1) Put One 9V Battery(Not Included) 2) Select Sensitivity Level: M(Meddle), L(Low), H(High) 3) Turn On Alarm 4) Insert Alarm Under Door Features 1) Home Safety Guarantee. 2) Stainless Steel Cover, Small Size. A Wedge Shaped Alarm Prevents Intruders From Opening The Door. 3) The Adjustable Sensitivity Switch Can Prevent Tampering. Powered By A 9 Volt Battery (Not Included). 4) It Has Three Sensitivity Levels And Super Noise. When