![]() ![]() Our team and our global partners will be glad to help you. If you need more information or want to place an order, please contact our Customer Service. Audible signals from Auer Signal are available worldwideĪuer Signal signaling devices are manufactured in the south of Vienna, Austria. The specified sound pressure level of our audible signaling devices was measured in an echo-free sound chamber at a distance of 1 meter. The recommended sound frequency should be between 3 Hz. The frequency at which the signal is at its loudest should be as far away as possible from the frequency of the ambient noise. For audible signal devices, Auer Signal recommends a sound pressure level at least 15 dB higher than the ambient level.
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