In the potentially explosive atmosphere, also known as zones, it may occur that the people working there must be informed. This information is usually done by issuing an acoustic or optical signal. For this we supply a complete product group of signal lamps, flash lights, LED lighting with a fixed or adjustable color variation. Also there is a signal tower available to convey the correct information. We then have a number of different acoustic alarm devices in our program. For example, there is a 100 dB (A) and a 120 dB (A) horn part of our program, we have a number of motorcycle sirens and a bell is available.