An embodiment of the invention provides an AC motor that is driven by an AC voltage. The computer storage system may transform the first storage information into a first virtual storage instance, provide access to the first virtual storage instance on a second network not in communication with the first network and the storage device, and enable over the second network the modification of the first virtual storage instance to create a first modified virtual storage instance. FAIMS functionality is removed electronically when not desired by application of radio frequency waveforms to the curved electrodes. The signal checker measures a delay time from the generation to the arrival of the signal R12. Thus, it is possible to increase the degree of freedom for the relative dispositions of the cylinder lock and the door-locking device, while eliminating the need for a protector for preventing the unauthorized access from the outside. The message generation module sends a message to the user in response to receiving the response.