The modular system consists of a base box, the RADOX SolarBox HM, that can be equipped or retrofitted with an optional BlueBox at any time. The company implemented various application-specific smart electronics in this BlueBox. The RADOX SolarBox HM Blue-Safety is one that allows users to switch modules to a voltage- and current-free state via a master switch for maintenance and repair work. The entire security system detects arcs on bad contacts and faulty insulation protection to prevent fires. The RADOX SolarBox HM-Blue-AC has an inverter module built in. It supports the conversion of DC to AC directly on the module. Via plug-and-play AC PV modules can be easily and quickly installed. The prototypes of both products will be presented at the Intersolar Europe.