Mechanical Engineering Question:
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How do motion detectors work?
Answers:
Answer #1Motion detectors work to help with construction work.
Answer #2A signal is constantly transmitted (rf wave), once there is an interruption in that signal i.e. a cat walks across the driveway a different signal other than the initial is received and the motion detector triggers a contact or switch to make the light or other source operate.
same applies for an infrared detector that detects infrared energy.
same applies for an infrared detector that detects infrared energy.
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