The modular hardware and software concept allows customizing a fire alarm system by expanding and scaling its performance through additional hardware modules or software upgrades depending on the need. The functionality of the fire alarm control panel FlexES control is based on only six different pluggable modules. They are easy to assemble, replace, or supplement according to the plug-and-play principle. This modular concept covers all present and future needs: The solution is perfectly coordinated - not over-sized today and expandable at any time in the future. One FlexES control operates up to 18 loops.