An uninterruptible power supply device including a rectifier circuit rectifying output power of an inverter. The liquid crystal display device includes a first coupling capacitor and a second coupling capacitor, which are coupled to corresponding data lines among a plurality of data lines and are coupled to a first auxiliary data line and a second auxiliary data line, respectively. An antenna section on the keyboard circuit board is configured as an antenna and positioned at the lower portion of the housing and has a pattern of conductive traces forming an antenna circuit and connected to the circuitry on the main circuit board. The first message may comprise a first command and an operation input value for a print job at the cartridge, and to process the first message may comprise decreasing the amount of dispensable material. The device includes an elastomeric mat which can be easily placed on the wheel set shaft and retaining means for retaining the elastomeric mat on the wheel set shaft.