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Which type of motion detector transmits a consistent ultrasonic or microwave frequency in a monitored area and monitors for changes in the frequencies or in the services of the reflected pattern?
A wave pattern motion detector
Capacitance motion detector
Photoelectric motion detector
Infrared motion detector
The correct response is wave pattern motion detection. This is one which transmits a consistent low or high frequency signal to monitor the area and monitors for change in the reflected pattern.
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