[. . . ] [. . . ] Insert the system interface in the slot, bypassing two small areas of resistance until it latches audibly in place. The edge of the system interface must be aligned with the edge of the slot. Technical data Powerline house bus: EHS 1. 3 A Mains voltage: 220 V - 240 V ~ 50 Hz Max. ambient temperature: +70 °C Siemens-Electrogeräte GmbH Carl-Wery-Str. [. . . ] [. . . ]