The various controllers 56 have Velcro or other connecting means affixed to them, so that may be affixed in place, or removed, and repositioned, as desired and required.FIG. 20 is another pad, which can be of any size, it may be approximately one foot by one foot (1?????1???) in dimension, or four feet by six feet (4?????6???) to use for bed or operating table application.