Vienna-headquartered security and building-technology group holding three current ÜBZERT certificates: Z-2020 091 for Brandmeldeanlagen to April 2030 in the name of PKE Electronics GmbH, Z-2025-102 for Brandmeldeanlagen in the name of PKE Gebäudetechnik GmbH, and Z-ENS-2019-014-II for voice alarm on Bosch Paviro, Praesensa and Praesideo plus ITEC iTEC net — all five phases. Its Swiss company is listed separately in ch/alarm-detection.exs on its own VKF recognition.