A new ceiling speaker GM 3405 EN54-24 is launched trough g+m elektronik. A part of the speaker is a metal firedoom and ceramic terminal with thermal fuse, which predisposes to use this speaker in voice alarm systems. More information can be found under "Speakers EN 54-24" from main menu


From today is in opeartion the new website for voice alarm systems APS-APROSYS from swiss manufacturer g+m elektronik a.g. The new site we built for you to provide far more extensive information about this world wide well-established system. For questions, whether technical or business please don´t hesitate to use contact form or the tepephne connection.

  • Luxembourg Plaza Prague
  • Palace of justice Prague
  • Shopping center Gečko Liberec
  • ČSOB headquarters Prague
  • University Pardubice
  • SKODA Car factory M.Boleslav
  • City Tower Prague
  • Hospital Kladno


© Ing. Aleš Drábek 2012 |

Shopping centers, office buildings, hospitals, factories, churches

in accordance with EN 54-16/EN 60849

digital-amplifier of class D

open architecture

LAN networking