The wave strength of a remote control key of a vehicle can be enhanced by forming the remote control key including a gripping portion, a metallic blade portion projecting from the gripping portion, and a transmitter contained in the gripping portion and electrically connected to the metallic blade portion. A portion of the length of the handle is configured to fit within a channel defined in a housing of the mobile station. In the deceleration step, the forward movement speed of the screw is controlled in a feedback manner such that the internal pressure of the mold reaches a predetermined target pressure. A pin rod shaft extends upwardly from the housing bottom wall and has a pin rod dowel extending outwardly therefrom. Two such LED arrays are connected to electrodes in inverse parallel.