A paper shredder with an allowable thickness warning function is provided. In aspects, while a vehicle is in motion, certain types of notifications are not presented to the driver. The light fixture includes a circuit board that has a light emitting diode. For mattress and seating applications, the welded foam structures may be combined with an innerspring, and certain of the foam components of the structure may mechanically engage parts of the innerspring. The second insulating film is interposed between the capacitance electrode and the substrate via the portion of a second opening.