The subject of the present invention is a fuel cell system having at least one fuel cell which has an anode, a cathode, and a membrane element. The financial information includes a check written by a payer and transmitted to a merchant. When the fan is rotated to cause an amount of fluid to flow through the outlet of the frame, the fluid control elements provided in the frame are adapted to control a flow direction of the fluid flown out of the outlet. Then decipher the content of the vocal communication. Multi colored LEDs can be used to supply different conditions. The power controller is configured to control the DC combining circuit to achieve a desired overall power output from the at least two rectenna elements.