The present invention provides a wireless communication system, a control station, and a terminal station whereby a direct link protocol can be initiated from the control station. A cover assembled on the base and sliding along a first direction relative to the base defines a pair of sidewalls extending downwardly therefrom. The smoothing capacitor smoothes an output from the rectifying circuit. Parts 25\u2032 and 26\u2032 of a body 13\u2032 of the brake are also shaped differently but operate similarly. The second package is disposed under the first package.