Yale Pre Break-in Sensor - Detects Open and Closing; Shocks and Vibrations SensorMonitor the opening of any door and window in your home with the Yale Pre Break in Sensor. Most importantly, you will be alerted of any potential intrusions before they take place, thanks to the vibration sensor. Slim design Its sleek and slim design is tailored to fit perfectly within the narrow frames of windows and doors. Blending effortlessly with your home decor, this alarm sensor discreetly enhances your security without compromising on its