automatic lights
nounUK /ˌɔːtəˈmætɪk laɪts/
US /ˌɔːtəˈmætɪk laɪts/
Lights that turn on and off by themselves without a person touching a switch.
The automatic lights in the hallway come on when it gets dark.
RELATED WORDS
OTHER MEANINGS
2. Lights in a car that switch on by themselves when it gets dark.
My dad's car has automatic lights, so he never forgets to turn them on.
3. Lights in a building that are controlled by a timer or computer.
The school's automatic lights turn off at ten o'clock every night.
4. Lights that turn on when they detect movement.
The automatic lights outside the garage scared away the raccoon.