A magnetic switching device is provided with a first switching device which is provided with a movable magnet connected to a contact bridge, and with a second switching device which is provided with a magnet connected to a movable switch element. The FePt nanoparticles can have magnetically easy axes perpendicular to the surface of the soft underlayer. The fuel supply system is configured such that fuel is injected sequentially in two cylinders during the pressure-feed-interval period from the execution of one fuel pressure-feed operation to the execution of the next fuel pressure-feed operation. When the seat is at a position other than the front end position, the cover member is positioned between the permanent magnet and the magnetism detection part of the sensor, thereby preventing erroneous detection due to magnetic foreign matter and other magnetic substances caught in or attached to the sensor. Upon detecting the access point, the access point detection in an ANY scan mode is firstly performed, and then the access point detection in a special scan mode is performed only for access points which are not detected by the ANY scan and are non-responsive to the ANY scan. The strap clamp features a plurality of adjustable compression members that engage the flexible insert.