A portable salon station system for efficiently and safely transporting salon appliances. The system includes a laser energy source and a probe interconnected with the laser energy source to receive a laser beam therefrom and then direct the laser beam onto the surface of the component and scan an area of the surface while the component remains stationary. The second administrator issues the second credential to the requester, including the issued first credential. The user can easily switch the channel in the same manner as the user performed in the past simply by responding the selection screen. The mobile terminal includes a controller for generating a control signal for switching a ground according to a frequency band used by an antenna, and a switch unit for switching a contact point for each frequency band according to the control signal. The region contacts the insulation layer, and the region is disposed between a source and a drain of the LDMOS transistor.