Ultrasonic Receivers, TransmittersUltrasonic receivers and transmitters are sensors that use high-frequency sound waves to detect the presence and distance of objects. These sensors work by emitting a short burst of ultrasonic sound waves, which then bounce off of nearby objects and return to the sensor. The time it takes for the sound waves to travel to the object and back is used to calculate the distance to the object. Ultrasonic receivers and transmitters are commonly used in applications such as obstacle avoidance in robotics, level measurement in industrial processes, and medical imaging.