signallers

the speaker used hand gestures to signal his enthusiasm.

traffic lights signal when it's safe to cross the street.

a red light signals danger; be cautious and stop.

the company sent a signal to investors about future growth.

mobile phones signal to cell towers to connect to the network.

the rising stock prices signal a positive trend in the market.

the flashing light signals that the door is opening.

he sent a signal of support to his colleagues during the meeting.

the radar signals detected an approaching aircraft.

the brain sends signals to the muscles to initiate movement.

the emergency broadcast signal warned of an impending storm.

the wi-fi signal was weak in this area of the house.