Audible signalling equipment
Auer Signal offers a full range of audible signal devices for different kinds of industries delivering quality products since 1910. Here you can find audible signal devices for panel or surface mount, with volume from 65 db to 127 db for the loudest ones. We offer electronic sirens as well as alarm horns in various sizes, shapes and colours with degree of protection up to IP66.
Series A - the Mighty

The loudest multi-tone sounder of series A is the ASX, which achieves a sound pressure of 127 dB. Up to 63 keys can be selected. But also the smaller devices boast high performance.
The multi-tone sounders of the A series can be combined with a luminaire of the M22 series. This combination is suitable if you want a dominant multi-tone sounder with an optical supplement in the form of a light indicator. All combinations are available in four sizes. Multi-tone sounders from series A in combination with series Q luminaires can be found in our product series A+Q.
Series T+U - the Allrounder

Selected luminaires from the T+U series can be upgraded to an optical-acoustic signal device with the piezo buzzer TDE. The T series buzzer can be used as a continuous or pulse tone. Light and sound can be controlled separately with a combination product. The combination of both modules has protection class IP66.
Series M22 - the Installable

The M22 series buzzer, the loudest installation buzzer available on the market, is available as an add-on for the installation series. The high sound pressure level (max. 100 dB) is mostly infinitely variable. Luminaire models with LED technology can be upgraded to an optical-acoustic combination with the piezo buzzer. Sound and light can be synchronised or separately controlled.
Series K+H - the Little & the Great Loud

Series ES - the Sirene Beginner

Series EH

Series SE

Series M28 - the Basic

Our M28 series built-in buzzers incorporate the tried-and-tested piezo technology. The devices are available in different keys. Choose a model with a continuous tone (ESD), pulse tone (ESP, BU2, BU3) or a model with both keys (ESZ).
BU1 Surface mount buzzer

- Ø 60 mm surface-mount buzzer
- Max. 108 dB (A) sound pressure
- Prewired with 2.25 m cable
- Metal mounting bracket
- Pulsing tone
- Very attractive price/performance ratio
- High degree of protection IP 66
- Reach Declaration: The SVHC substance “titanium zirconium oxide”, CAS no. 12626-81-2, exceeds the standard value of 0.1%.
BEL bell

- Electromechanical bell
- Loud and full, typical bell tone
- Suitable for universal applications and for installation on vessels and railways as well as in alarm systems
- High degree of protection IP66, dustproof and weatherproof
- Galvanised steel bell dome, powder-coated
- Colour: grey (all voltages), red (24 V DC)