Radio reception antenna module for the RS485 sub-bus. In a housing for surface mounting 84x84x30 mm in the E-Design switch system. Stand-by loss only 0.5 watts. For screw fastening on device boxes with a screw spacing of 60 mm, we recommend stainless steel countersunk screws 2.9x25mm, DIN 7982 C. 2 pieces of stainless steel countersunk screws 2.9x25mm and dowels 5x25mm are included. Up to three FEM and/or FEM65 radio reception modules can be installed anywhere in the building in addition to a FAM14 if required and connected to the main bus with a 4-core shielded sub-bus cable (e.g. telephone line) via a gateway FGW14.