These are sound waves which are transmitted at a frequency of 20,000 Hz or higher, making them inaudible to humans. Ultrasonic waves are measured in hertz (Hz), which is equivalent to cycles per second. Devices, such as our Marksman™ II, are used to convert and amplify inaudible ultrasonic sounds into audible “natural” sounds in order to detect leaks and maintain equipment. Check out this video to see how it works.
