The external vacuum sensors and voltage probe used on a PT-V are compatible with the PT-VI but must be recalibrated before they are used for the first time. The external vacuum sensors and voltage probe have an Odu (male) 6-pole connector. The PT-VI has M12 connector input ports. An adapter cable is available to connect the Odu (male) 6-pole to the PT-VI’s M12 connector input ports.