Small motor generating vibration.
Small motor generating vibration.
Motor producing tactile vibration.
Device transmitting ultrasonic signals.
Device receiving ultrasonic signals.
Device converting electrical energy to ultrasonic waves.
Hardware using sound waves for detection or ranging.
Hardware processing radar sensor data.
Hardware transmitting and receiving radar signals.
Antenna used by radar hardware.
Hardware using radio waves for detection or ranging.
Everything is a system, and every system contains systerms.