A remote-actuated shut off valve apparatus including a valve assembly and a control module. The controller corrects the drive signal from the signal processing unit by using a predetermined correction value corresponding to the driven state of the vibration correction unit, and controls drive of the vibration correction unit by using the corrected drive signal. A data structure is marked to indicate which units are encrypted. A device for carrying out the method includes a transducer array in addition to a suitable potentiostat.