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1. A safety device with a safety switch and at least one actuator, said actuator only comprised of a transponder, said transponder serving as a sole data transmission device, and said actuator fulfilling a double function of releasing and configuring the safety switch, wherein when the actuator is arranged within a response range relative to the safety switch, signals are transmitted from the actuator to the safety switch, by which means a function of the safety switch is released, characterized in that the actuator is additionally designed for configuring the safety switch in that a configuration signal is transmissible from the actuator to the safety switch, wherein a configuration signal is encoded in data code of the actuator in addition to identification data, and wherein different functions can be preset by a configuration of the safety switch, wherein following a configuration of the safety switch with a first actuator all other actuators with configurations differing from this are rendered invalid such that configuration signals of all other actuators are then automatically rendered inoperative, wherein for a safety switch with latching, different latching positions can be configured or wherein for a safety switch with guard locking, the functions of protection of persons and of protection of process can be configured, wherein in the configuration of protection of persons the safety outputs of the safety switch, and therefore a release of operation of the system, only occurs if the guard locking is active for the safety door in its closed position, and in the configuration of protection in process the switching on of the safety outputs occurs as soon as the safety door is closed.
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