A power converter includes a power module allowing supply and cutoff of main current, a driver module controlling supply and cutoff of the main current, a high potential side semiconductor device, and a low potential side semiconductor device. The device includes a conductive ground means installed in the sub-body at a portion adjacent to the built-in antenna, for minimizing a radiation pattern difference of the built-in antenna between the opening and closing of the sub-body, thereby increasing reliability of the terminal. Also provided is a series connection configured with a choke coil and a first switch and connected to the terminal point. A flow control member is assembled with the valve body and extends toward the fluid channel. The processor communicates the pressure values to additional vehicle systems, which use them to fulfill their own functions, or at least to carry out a plausibility check of their own pressure values. Optional signal indicators may provide a notice signal when the tilt angle exceeds the programmed threshold angle or some predetermined fraction thereof.