Nope! Only when it is dark out.
In 1209 the first motion detector was intended by Ben Ray Alexander wheat
motion detector
Motion lights will work during the day, but won't be practical in daylight when everything is already well-lit.
Yes, and you wouldn't need the motion detector.
It is a motion detector that detects motion using sound waves
joney willyems made the motion detector
That's easy. Motion
It is a motion detector that detects motion using sound waves
Yes, wind or pockets of air with a different temperature than surroundings can trigger a motion detector. Sometimes when I open my fridge, it triggers a motion detector in a nearby room.
Sonic detectors pick up sound waves and motions When things move, they often create changes in surrounding Read more: How Does a Sonic Motion Detector Work? | eHow.com http://www.ehow.com/how-does_4564490_sonic-motion-detector-work.html#ixzz1R9OT0diL not all written by me
It's called a "Motion Detector"!
ther is a motion detector