Signal

The unique vocalizations of a humpback whale are a signal of its species.

The smile on her face is a signal of happiness.

The beeping noise from the machine was a signal that it was malfunctioning.

The "open" sign in the window is a signal that the store is open for business.

A full parking lot is a signal that the mall is busy.

The satellite dish will signal the spacecraft's location to the ground station.

The light on the dashboard is a signal that the car needs to be checked.

The traffic light changed from red to green, which was a signal for the cars to start moving.

The amplitude of the signal determines the intensity of the sound.

The radio tower signals the radio frequency to transmit the audio signal.

The computer program is designed to signal an alarm when there is a security breach.

The navigation system uses GPS to signal the location of the vehicle.

The number of people in a room can be a signal of how crowded it is.

The Doppler signal can be used to determine the speed of an object.

The loud alarm was a signal that the building was being evacuated.

The green light on the machine is a signal that it's ready to use.

The pressure in a tire can be a signal of how full it is.

The presence of tracks in the snow is a signal that animals have been in the area.

The bride and groom exchanged rings as a signal of their commitment to each other.

The crowd cheering is a signal that the performer did a good job.

A cough can be a signal of an underlying health issue.

The weight of a package is a signal of how heavy it is.

The red light was a signal that the store was closed.

The flashing red light at the railroad crossing serves as a signal for cars to stop.

The flashing red light is a signal that the machine needs attention.

The sailor used a signal flag to communicate with other ships in the harbor.

The tattoo is a signal of his personal identity.

The voltage signal produced by the sensor was too low to be detected.

The construction worker used a hand signal to warn his colleagues about the incoming crane.

The flag at half-mast is a signal of mourning.

The dog barked as a signal to its owner that someone was at the door.

The loud roar was a signal of the lion's presence.

The intricate patterns on the pottery are a signal of the culture that produced it.

The stench in the room is a signal of a gas leak.

The red light on the traffic signal means stop.

The flashing "open" sign in the storefront window was a signal to customers that the shop was ready for business.

The artist's use of bold colors is a signal of their style.

The logo and design of the phone are a signal of its brand.

The pilot made a distress signal to the control tower after encountering engine trouble.

The signal frequency is a crucial factor in determining the quality of the image.

The signal processing algorithm improved the clarity of the image.

The TV signal was interrupted during the storm.

A low battery icon is a signal that the phone needs to be charged.

The soldier used a hand signal to indicate to his squad where the enemy was hiding.

The posture and behavior of a dog is a signal of its breed.

The distinctive accent is a signal of their country of origin.

The presence of a security guard at the entrance is a signal that the area is protected.

The police officer used a siren as a signal to pull over a speeding car.

The smell of food coming from the kitchen is a signal that dinner is ready.

The ship signaled its position to the coast guard using a distress signal.