By the frequency band, acoustic wave can be divided into infrasound, audible sound and ultrasonic sound.

Sound wave is not only used for communication, the modern acoustic technologies are developed to provide special solutions to security and defense issues, for example, using powerful directed acoustic hailing device to drive away the crowds in illegal gatherings outdoor, and thieves or burglars indoor; using ultrasound to detect underwater objects; acoustic camera to detect equipment failure, microphone array to accurately locate the sound source, and so on.

We are committed to using the sophisticated acoustic technologies and devices to help customers address security and safety issues efficiently and cost-effectively.