Abstract: The invention relates to a system for unlocking a lock of a space that needs to be secured, in particular an appliance or electrical cabinet (1), in which system, in the locked state of the lock, an electromagnetically drivable bolt (5, 6, 7) can be moved from a state in which it locks the lock to a state in which it releases the lock by applying an electrical voltage, wherein the lock is arranged in the interior of the space and is provided with a code storage device (8) which allows the bolt (5, 6, 7) to be operated only when a code which is stored in the code storage device (8) matches a key code which is wirelessly transmitted from outside the space, via the space wall, to the code storage device (8).

Abstract: A connection cable is provided for connecting two system devices that each include a connection element or receiving socket, the connection cable having a coupling element or plug at each end, each coupling element of the cable including an RFID antenna. A line connection which is electrically separate from the connection cable extends between the two RFID antennas. The line connection can be housed within the same cable sheath as the connection cable. Each of the system devices includes an RFID transmitter, one being an RFID transponder and one being an RFID reader which transmits and receives. The RFID and line connection apparatus enables a simple form of monitoring correct connection of two system devices.

Abstract: The invention relates to a connection cable for the electrical or optical fiber connection of two system devices (1, 4), each having a connection element, for transmitting electrical energy or data signals, wherein the first and second ends of the connection cable (8) each have a coupling element for connecting to a connection element of a system device. According to the invention, the coupling elements each have an antenna arrangement (6, 7) for RFID coupling to an RFID reader or RFID transponder in a system device and the antenna arrangements (6, 7) are electrically connected to each other via a line connection (5).