| 摘要 |
The present invention provides an alarm for detecting the unauthorized movement of an object said alarm comprising a an electro-mechanical motion sensor for detecting the unauthorized movement of an object and which responds to motion in all axes, a programmable control microprocessor, to detect unauthorized movement of the object, an audible alarm means that emits a sound oscillating between at least two frequencies and at A volume of about 120 dBs when said unauthorized movement is detected, and a rechargeable battery. The microprocessor, audible alarm means, rechargeable battery and electro-mechanical motion sensor are mounted on a circuit board in valuable items such as televisions, stereo systems, VCR's, video cameras, computers etc. When the alarm is armed it will sense any motion of the item to which it is attached and will sound an alarm if sufficient motion has been detected.
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