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The wedge-type alarm fits any door and features 3 sensitivity levels. It requires no installation and is easily placed behind the door. It can also be used as a simple door stop when closed. It has a loud siren to prevent break-ins. It operates with a simple 9V battery (not included).
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.