3-Pack Upgraded Door Stop Alarm -Great for Traveling Security Door Stopper Doorstop Safety Tools for Home Set of 3

This Door Wedge can be easily applied to closed doors, when the door is opened it will activate an alarm alerting you of a possible security breach. Door stop alarm & door stopper keep intruders out, also prevent the doorknob from hitting the wall. High- quality: Made of high damping rubber & abs plastic, very convenient to use. Loud alarm: 120dB loud alarm sound could scare intruder. Portable alert 3 sensitivity levels: Low – Medium – High, with an adjustable sensitivity switch on the side. Easy to Install: Portable and easy way to add piece of mind when traveling or working alone. Widely use: Can be used in home, dorm, office hotel, motel & more. Specification: Power by: 9 v battery (not included) Single size: 5.5 * 1.8 * 1.5 inch Single weight: 0.28 lb Package includes: 3 x Door stop alarms (9v battery is not included.)