A data communication arrangement permits efficient data transfer between a controller module and multiple target modules using a two-phase protocol. 01 to 7 weight parts of at least one selected from the group consisting of Au, Ag, Cu, Ni, and Pd is added to 100 weight parts of the composition. The base station index expresses a degree to which the wireless communication device functions as the base station. Further improvements in air distribution are achieved by an elimination or substantial reduction in percentage of opening through the floor in areas immediately adjacent to the container side walls.