ZZRUI 2-in-1 Portable Door Stop Alarm - 120dB Security Wedge for Home & Travel (3-Pack)

About this item

• 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.
• PORTABLE DOOR STOPPER ALARM – package include 3 door alarms,each weight about 120g;easy to carry;alarm loud 120db to protect you;great for travel;ideal for bedrooms, hotels, apartments, dorm rooms, front doors, etc;peace of mind when traveling or working alone.
• DOOR STOPPER SECURITY ALARM – the door stopper alarm 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.
• The non-skid door stopper can be used as a common rubber base wedge to hold the door open without any loud alarm sounds, as the alarm is switched off.
• EASY INSTALLATION – no wiring needed; battery-operated (requires 1x9V battery,not included);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),it can not slide on tile when door opens,smooth floor can try to use H-type sensitivity,vibration-sensing alarm.