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    Exam 21: Control and Controlled Devices
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    A Retroreflective Device Transmits the Light to a Reflector and Detects
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A Retroreflective Device Transmits the Light to a Reflector and Detects

Question 15

Question 15

True/False

A retroreflective device transmits the light to a reflector and detects the reflected light at its receiver.

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