Door and Window Alarm with Vibration Sensor, Black, 4-Pack, 125dB, Slim and Powerful Burglar Detector with Adjustable Sensitivity LED Indicator for Home Security

Loud 125dB Alarm: It works by detecting physical vibrations. The 125dB audible alarm and flashing red light can help you prevent potential intrusions and thefts.

Easy to Use: There's no need for wires or screws/hubs to install; simply peel and stick (double-sided adhesive tape included). It's super easy to install and use.

Adjustable Sensitivity: The adjustable sensitivity system prevents false alarms. Adjustable sensitivity is activated by pushing, tapping, or gently touching to avoid false alarms. You can easily install it according to your preferences.

Ultra-Thin and Lightweight: An ultra-thin design and excellent performance make it perfect for your home, apartment, office, shop, garage, dorm room, and even RV.

They are the best choice for a home security alarm detection system. Low battery warning: Battery-powered alarm; each sensor includes 3 long-life LR44 batteries. Frequent battery replacement is not necessary. A low battery warning will remind you when to replace the battery.