A method for linking a second remote control unit of an industrial truck to a first remote control unit of the industrial truck comprises linking the first remote control unit to a transceiver unit using a bidirectional radio connection. The unique address of the second remote control unit is transmitted to the transceiver unit by near field communication. The unique address of the second remote control unit is transmitted by the transceiver unit to the first remote control unit via the bidirectional radio connection. The first remote control unit is linked to the second remote control unit using the unique address of the second remote control unit. A command is transmitted from the second remote control unit to the first remote control unit and the first remote control unit transmits the command by radio to the transceiver unit.