We are experts in the field of large-scale alert and warning systems since 1961 Powerful and modern siren systems for all types of applications Mobil and stationary - intelligent alert and warning systems for more safety Acoustic warning system for railway vehicles Products Reliable and innovative products for any application Alarm Electronic and pneumatic siren warning systems Railway technology Acoustic warning system for railway vehicles Solutions Civil protection Safety and quality where it matters most. Fire services Reliability and efficiency in case of emergency Industrial plants and power stations Warning system solutions for more security in and around industrial factories Road tunnels An effective warning system for more security in tunnels Airports and airport grounds Safety at the highest level Golf courses Effective alert systems for more safety on the golf course Acoustic signalling for rail vehicles Sirens for all type of rail vehicles Other areas for warning systems Various challenges, various solutions Facts and numbers > Active siren systems in Switzerland Company foundation % Market share in Switzerland > Installations worldwide Clients News What's new? Find out more about the latest information on market trends, product news & developments and our customers' experiences.