Ultrasonic rangefinders

Ultrasonic rangefinders are devices that measure distance by emitting high-frequency sound waves, beyond human hearing. When the sound waves hit an object, they bounce back to the sensor. The device calculates the distance by measuring the time it takes for the echo to return, using the speed of sound. Commonly used in robotics, vehicles, and automation, ultrasonic rangefinders provide accurate, non-contact distance measurements, enabling systems to detect obstacles or determine positions efficiently and reliably.