Systems and methods of providing a mobile device cover are described. The tailgate opens and closes initially relatively quickly and then more slowly as the tailgate approaches the fully open or fully closed position, the rate of opening and closing being determined by the period of time lapsing from the bale discharge signal. This value is converted into a signal to drive the fan. In a particular embodiment, the magnetic layers comprise Co, the spacer layers comprise Pd, and the additives comprise Cr, Pt, B, Ta, Nb or combinations thereof. The security beam may have a substantially vertical orientation and may be configured as a hand hold for steadying the patient when transferring onto and off of the seat base. In addition, the fourth set of contacts can be two sets of contacts for positioning the bridge rectifier on either side of the second member.