The present invention is related to device for selecting one of several triggering apparatuses, which are simultaneously connectable to said device. The triggering apparatuses are arranged for producing each a triggering signal to enable/disable one or more components of a radiation treatment apparatus. The triggering signals depend on detected parameters. The device is configured to receive triggering signals from the several triggering apparatuses, when all of the apparatuses are connected to the device, to receive a selection of one of the triggering apparatuses, to generate a universal triggering signal for the one or more components on the basis of said received triggering signal from the selected triggering apparatus, and to send the universal triggering signal to the one or more components.