Security Alarm for Windows and Doors, Thin, Opening Detection Type, No Wiring Required, Adhesive, Easy Installation, Vibration Sensor, Self-Defense, Alarm, Window Alarm ★★Brand New, Unused Item★★ ◎Quantity...2 pieces ◎Alarm Volume...Over 130db Super Loud Volume ◎Installation...Adhesive Type [Product Details] ●Detects Vibration and Impact Detects impacts such as knocking or breaking a window, and a super loud 130db alarm will sound. It will continue to sound for about 30 seconds and then stop automatically. It will then return to standby mode and monitor for the next anomaly. ●Ultra-Thin Design With its slim 9mm design, it is less likely to interfere with the opening and closing of windows when attached. Lightweight design! ●Just Stick-On Double-Sided Tape Type Simply peel off the backing sheet and stick it on! No tools required, anyone can easily install it. ●Useful in Various Places The simple design does not interfere with your interior decor.