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Microwave detection technology

Add Date:2013-12-29 Hits:1141 Font Size:S M L Back
According to the Doppler principle of physics that we know when we launch a microwave frequency of encounters objects within the scope of its coverage will be reflected back, if there are moving objects within the coverage range, reflected back microwave frequencies subject to change. Microwave detectors that can transmit and receive microwave, and detect faint emission frequency differences and reflected frequency, and as a trigger signal to trigger the alarm.
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