Article: Device designed to reduce false alarms.(EE Systems Group Inc. and Randall Wang develops false alarm reduction components)

In the late 1990s, when the founder of E & E Electronic Engineering Research Inc., Randall Wang, realized that his southern California alarm company was faced with a serious and growing problem of false alarms, he reviewed thousands of accounts and discovered that approximately 75 percent of false alarms are caused by false trips from PIR motion detectors.

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These in turn are caused by differential temperature sources, lightning, radio frequency (RF) energy, insects, air drafts and other sources. The main characteristic is that they happen only once within a reasonable period of time.

In contrast, a real break-in will cause more ...

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