Mbangde Wedge Door Stop Alarm with 120 dB - Great for Traveling DIY Home Apartment Security Door Stopper Doorstop Safety Tools (Pack 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.)