4 Packs Upgraded Door Stop Alarm Portable Wedge Door Stoppers Security Alarm 120db Entrance Alert Loud Door Stop Alarm for Travel Home Apartment or Dorm (4 Packs)

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About this item

• ✔ Door Stopper Security Alarm – The door stopper alarm is in "on" status, when door pressure is applied, the door alarm will be triggered while make extremely loud 120db alarm, helps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors, security protection.
• ✔Non-Skid Door Stopper– When door stopper alarm is in the "off" state, it acts as common door wedge, its high damping rubber prevents the door from sliding and keeps the door in the open position.
• ✔3 Sensitivity Levels – Low - Medium - High, with an adjustable sensitivity switch on the side; H level is the most sensitive level that vibration will trigger an alarm; please note when the alarm sound gradually becomes smaller, it means to replace the new battery.
• ✔Easy Installation – No wiring needed, just put 1x9V battery ( not included) in , place it under the door, the gap bewteen the bottom of the door and the floor should be 10mm(0.38 in) to 35mm(1.35 in)and switch the button on the back to “ON” then it can works.
• ✔Portable Door Stopper Alarm – The package includes 4 door alarms, each weight about 120g; easy to carry; alarm loud 120db to protect you; great for travel, apartment, home, etc; to protect you when traveling or working alone. A protector who really must be around you.