Digital shock detector with magnetic contact which provides a reliable 24-hour perimeter protection. An intrusion is detected once the burglar tries to break open, smash in, drill or even sawing open a secured door or window. This ensures that the intruder has been detected before he is inside to ensure minimum damage and maximum personal safety. Specifications: Encapsulated piezoelectric sensor with digital interpretation of the signal-to-three-colored LED for a precise and reliable adjustment with indication of over and low sensitivity Potentiometer with 2-Step settings, left or right.