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Product: TOWODE Upgraded Door Stop Alarm 3-Pack, Door Stoppers Security Alarm with 120 dB - Great Gift for Traveling Hotel Home Apartment Door Stopper Security Tools 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.) ♥【Dual Function】: This door stopper security alarm can be a door stop alarm or a door stopper, when the alarm being triggered and the meantime it will keep the intruder outdoor from you, it’s safe. If the door is installed very high and far from the ground,please put a soft thing under the door stopper.
♥【Non-Skid Door Stopper】: the door stopper alarm in "off" status,it can be used as common damping rubber base door wedge,hold door in open position,no any loud alarm sound.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
♥【Easy to Install】: No wiring needed, just put 9v battery in and switch the button on the back to “ON” then it can works. The bottoms are made of synthetic rubber for keep the alarm from slipping.
♥【Light-Weight & Portable 】 : Only 95 grams each portable doorstop alarm wedge ( without battery and package) good for carrying when you are travelling or need spend a night at strange environment.
♥ 3-Pack Upgraded Door Stop Alarm -Great for hotel door security devices traveling security door stopper doorstop safety Tools for Home set with an adjustable sensitivity switch on the side easily change the mode. TOWODE Black