An exit door includes a door panel attached to a door frame and having a presser bar device attached to a stile, to selectively open and lock the door panel to the door frame. Therefore, speed control performance of the brushless motor is improved while avoiding the upsizing and const increase of the apparatus . The other end is secured with a permanent or removable cap. The EGR valve manager further includes a prioritized switching feature for strategically switching between closed and open loop control modes, and a forward gain adjustment feature responsive to battery voltage to maintain constant system DC gain under changing battery voltage conditions. With this, a series of the processes to confirm the write data transfer end can be executed in high speed. Any one ground trace of each tile is arranged at an angle other than zero degrees relative to one determined board side.