What does motion-activated mean?
motion-activated
Definition
Switching on by itself when something moves in front of it.
Example sentences
The porch light's motion-activated, so it flicks on whenever a cat walks past.
The porch light's motion-activated, so it flicks on whenever a cat walks past.
We put a motion-activated light in the garage so we'd stop tripping over the bikes.
We put a motion-activated light in the garage so we'd stop tripping over the bikes.