ThreeH 4 Pack Door Stop Alarm 120dB Loud Portable Wedge Entrance Alert Anti-Theft Burglar Safety Tools for Home Security Apartment House Travel

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Colour: 4packs

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Product description

  • Dual Function Can be used as a door stop alarm and door stopper, if someone attempts to open the door, this product will prevent it from opening and activate a 120 dB alarm. Also you can use it as common door stoppers when turn off the ON OFF switch, its high damping rubber bearing can prevent the door sliding and prevent the bad guys into.
  • Easy Installation 1) Put one 9V battery; 2) Select sensitivity level M(middle), L(Low),H(High); 3) Turn ON alarm; 4) Insert alarm under door. The gap bewteen the bottom of the door and the floor should be 10mm(0.38 in) to 35mm(1.35 in)
  • 3 Levels Sensitivities With an adjustable sensitivity switch on the side, 3 levels sensitivities are optional, M(middle), L(Low), H(High).
  • Wide Applications Easy to carry, size 5.3 * 1.8 * 1.4inch(13.5 * 4.5 * 3.5cm) Net weight 4.2oz(120g). Great for travel; ideal for bedrooms, hotels, apartments, dorm rooms, front doors, etc; peace of mind when traveling or working alone.

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