An alarm system for detecting movement of an object to which the alarm is attached when the object or the alarm is moved, having a power source which can be a battery, an audio signal means, a detection circuit and a gimbled trip or motion switch. The alarm system can be mounted on a device to be protected from theft and have an electrically conductive chain attached thereto which is connected into the detection circuit so that when the chain is broken the audio signal means will function. The gimbled motion switch is positioned and connected to the detection circuit so that if it is moved, it will cause the detection circuit to function creating an alarm in the form of an audio signal. The entire system can be mounted in a closed locked box which is attached to a valuable object which is to be protected such as a bicycle, business machine or storage box.