The present invention discloses catalyst components based on ferrocenyl ligands, their method of preparation and their use in the polymerization of olefins. The common cipher key is replaced at fixed or irregular intervals, by being transmitted from a main node in a broadcast mode via the LAN to respective secondary nodes that are to share the key. The panel is then cut in a longitudinal direction with reference to the wood pieces into panel sections having a similar width. The first and fourth splitters are arranged diagonally opposing each other. The user also selects if the device is put into a unique mode where only emergency communication can alert the user. The first semiconductor chip and the second semiconductor chip are connected together by bonding a surface of the second semiconductor chip that is opposite to the main surface thereof to a region of the main surface of the first semiconductor chip other than the fringe region.