The ZDSO-230V series comprises fire-rated power supplies designed for voice alarm systems where a stable 230 V supply is required for key system components, such as amplifiers and control modules. Their purpose is to ensure the continuous operation of the entire system, which is of critical importance in the event of an emergency. Each model in this series holds a Certificate of Performance Stability issued by CNBOP-PIB, confirming the devices’ compliance with standards and legal requirements. This certification guarantees that the power supplies can be used in premises requiring compliance with the most stringent fire safety standards. The ZDSO-230V fire power supplies have been designed with reliability and functionality in mind. They are equipped with protection against short circuits, overloads and mains disturbances. Monitoring systems enable rapid diagnostics and real-time monitoring of operating parameters. Thanks to their design, the units are easy to install and maintain. This solution combines users’ practical requirements with the certainty of compliance with building regulations and fire safety legislation.