Since the discovery of fire and its potential to spread, there has been a need to find ways and methods to extinguish fires as quickly and efficiently as possible. By studying the combustion process and the spread of fire, it was concluded that it is necessary to remove one of the burning factors in order to stop the fire. Fire extinguishing systems work on exactly this principle. Fire protection is necessary in all areas of society, which led to the need for legal regulation through the fire protection act. In addition to extinguishing the fire itself, various fire protection measures have been developed and are in use. The measures are limited to the training of employees, the installation of fire extinguishing systems and the installation of fire alarm systems. The statutory regulations in turn impose obligations on employers, such as up-to-date testing, maintenance and servicing of these systems. The fire protection system must be tested once a year by an authorized company, and the employer must carry out an evacuation drill every two years and archive a record of the drill on file. Through this work, the testing of the fire alarm system in Zubak Grupa d.o.o. is monitored and deficiencies have been identified and corrective action taken. The response time of each department was measured before and after the system was serviced. This showed how important fire extinguishing systems are for people's safety and how a defect in the system can make it difficult to evacuate users from the building if not all parts of the system are working properly.