Carinthian security-technology firm, certified to 2030.

Salzburg systems contractor, certified for fire alarm.

Vienna infrastructure-systems contractor, certified for fire alarm.

Klosterneuburg security and building-technology firm.

Building-services group, certified for fire alarm to 2030.

Burgenland technology firm, certified to 2030.

Graz systems house with the register's oldest live BMA certificate.

Mostviertel electrical contractor, certified for fire alarm.

Mostviertel electrical contractor, certified to 2029.

Lower Austrian electrical contractor, certified to 2030.

Upper Styrian electrical contractor, certified for fire alarm.

National electrical-engineering group, certified for alarm and voice alarm.

South-eastern Styrian electrical group, certified for fire alarm.

Building-services group, certified for fire alarm.

Styrian fire-detection specialist — the whole business is in the name.

Carinthian security-technology firm.

Ötztal electrical contractor, certified for fire alarm.

Lower Austrian fire-protection and security-technology firm.

Tyrolean electrical group, certified in Tyrol and Carinthia.

The Austrian systems arm of the G4S security group.

Vienna security-technology house, certified since 2006.

Upper Austrian electrical contractor, certified for fire alarm.

Wachau building-technology contractor, certified to 2030.

Linz industrial-systems group with a fire-alarm certificate.

Vienna electrical contractor, certified to 2028.

Austria's broadest voice-alarm certification, on six platforms.

Vienna building-services contractor, certified to 2030.

Vienna building-technology group, certified for alarm and voice alarm.

Waldviertel technology firm, certified to 2029.

Vorarlberg systems contractor — the only holder in the westernmost state.

Wels technical-services firm, certified for fire alarm.

Styrian building-technology contractor, certified for fire alarm.

Austrian security-technology group with three ÜBZERT certificates.

Rail-technology group, newly certified for fire alarm.

Pinzgau electrical contractor, certified for fire alarm.

Mostviertel plant contractor, certified for fire alarm.

Tulln electrical contractor, certified for fire alarm.

Vienna security-technology firm, certified to 2029.

Lower Austrian security and control-systems house, certified since 2005.

Upper Austrian security-technology firm with two certified locations.

Lower Austrian security-technology firm.

The energy company of the Swietelsky construction group.

Klosterneuburg technology firm, newly certified to 2030.