From classic "honks" to complete acoustic systems A Kockum Sonics whistle is not only a high-quality design, it also contains the experience of more than 1 million TYFON® installations! Audibility is determined not simply by the strength of sound emanating from the whistle - much more is entailed to overcome absorption, distortion and local noise.

From classic "honks" to complete acoustic systems A Kockum Sonics whistle is not only a high-quality design, it also contains the experience of more than 1 million TYFON® installations! Audibility is determined not simply by the strength of sound emanating from the whistle - much more is entailed to overcome absorption, distortion and local noise.

From classic "honks" to complete acoustic systems A Kockum Sonics whistle is not only a high-quality design, it also contains the experience of more than 1 million TYFON® installations! Audibility is determined not simply by the strength of sound emanating from the whistle - much more is entailed to overcome absorption, distortion and local noise.

From classic "honks" to complete acoustic systems A Kockum Sonics whistle is not only a high-quality design, it also contains the experience of more than 1 million TYFON® installations! Audibility is determined not simply by the strength of sound emanating from the whistle - much more is entailed to overcome absorption, distortion and local noise.