The 'IC T4L module' is designed to integrate low-voltage buttons, sensor elements and other low-voltage operating devices into the digitalSTROM system. The IC T4L has the functional features of the SW-SKM300 terminal. This means that a number of electronic design button elements found in a construction project can be integrated into the digitalSTROM system. The line voltage for the connected buttons is provided by the T4L module with 15 V DC and a current of approx. 9 mA per line. The low-voltage side is galvanically isolated from the mains with >2KV. The module is installed in the flush-mounted/switch box. With its dimensions of d=50mm and h=26mm, it also fits in standard flush-mounted boxes. Each of the four button inputs in the module is equipped with a self-resetting fuse. For service and commissioning, each line is equipped with an LED that lights up when the button is closed. The integrated dS Joker function (black) makes it possible to assign gray (shadow) in the dS system in addition to yellow (light). The dSready module is pre-configured (see data sheet for settings). After the electrical connection and switching on the power supply, the module automatically registers with the digitalSTROM meter. A separate dSID is stored in the system for each of the four lines.