WERMA audible signals warn, protect and guide us in the modern industrial world in which we live. They come into their own where caution, prudence and clarity are essential; indicate emergencies and demand direct action. They are understood throughout the world regardless of culture or written language. Signaling with audible devices works via one or more tones or tone sequences. The warning tone must attract attention and highlight a specific danger.
offers a wide range of international signal tones: 32 continuous, alternating or pulsing tones at a range of different frequencies including fire alarm signals are available as standard.