Various embodiments of a system and method for failing over one cluster node to another are disclosed. With the ON operation of the erase transistor Tr3, the correction voltage write transistor Tr4 is turned on, and the switching transistor Tr5 is turned off. Traditional inventory and distribution channel difficulties are avoided. As set forth in more detail below, the correction is determined from the LQR feedback control strategy. The second wireless communication unit may be further configured to disconnect the communication link if the first wireless communication unit does not receive a second message from the second apparatus within a predetermined amount of time after transmission of the first message. The first section and the third section are directly attached to each other by a seam, by an adhesive, or by lamination.