The European X-Ray Free-Electron Laser Facility GmbH is building the European X-ray laser XFEL on the company premises (BG) Bahrenfeld, Osdorfer Born and Schenefeld. A new XHO office building with approx. 200 workplaces is to be built on the company premises in Schenefeld. The building is 3-storey + basement and has external dimensions of approx. L x W x H of 62.0 x 14.5 x 15.5 m. The shell is mainly a reinforced concrete structure.

The following services are included for the fire alarm systems (KG456) trade-work:

- Fire alarm center as a standing cabinet

- running tickets - 60 pieces

- Sounder — 8 pieces

- Strobe lights — 2 pieces

- Manual fire detectors — pack of 18

- Optical room detectors — 61 pieces

- Ventilation duct detector — 4 pieces

- fire alarm line — 1300 m

- conduit — 150 m

- coring - 12 pieces