The utility model relates to a system for be used for handling supersound input. The touch posture of non - can be carried out near harm detecting system, and physical contact harm detecting system is not needed. Also can be mutual with harm detecting system even this makes the user reach harm detecting system. Harm detecting system detectable posture is and carry out suitable action in response to the posture that detects. In an embodiment, harm detecting system can noiseless or turn off its audible alarm in response to its audible alarm of the posture that detects messenger with gaining the initiative by striking first. Can use one or more ultrasonic sensor to detect the posture, perhaps can use the motion detector to combine one or more ultrasonic sensor to detect the posture.
System for be used for handling supersound input