A wireless network device including a signal-to-noise ratio module, an error rate module, and an antenna selection module. The inventive device comprises spring clips which are disposed between the permanent magnets in order to ensure the angular positioning and the axial and radial support of said magnets against the inner wall of the head. A second foldable flap extends from the second side at a second distance beneath the upper side. An executing data mining algorithm operates upon a data mining model that depends on model parameters and on data values for independent variables published to the queues by at least one publisher. If the bolt member is cut, the retaining pin is displaced out of the longitudinal bore and dislodges the actuating means resulting in the identifying means indicating that the locking device has been tampered with or defeated.