An automatic sensing power system automatically determines a power requirement for an electrical device, converts power to the required level, and outputs the power to the electrical device when the electrical device is connected to the automatic sensing power system. The areal gripper includes a foil and air-tight frame. When provided with feedback, the module can actively adjust the first level of current to a maximum current while avoiding locking the electric brake, and to adjust the second level of current to a minimum current sufficient to hold the trailer.