This circuit can be activated by vibrations that are inevitably generated during any break-in attempts. It also operates on the principle of voltage drop, which occurs when the interior lighting is turned on. It has a delay before activation, and the alarm duration is adjustable. After an alarm, the system automatically resets itself. The alarm system can also be used for other objects. Operating voltage is 12 VDC, with a circuit board size of 47x55 mm.