A noise suppressing device is provided for suppressing noise of a first audio signal to generate a second audio signal. Each item has an associated transponder which is configured to transmit item identification data for indicating a secured status and a consumable status of the associated item. Each branch is divided into a front section, a middle section and a rear section and has a supporting rib and a pulling rib both pivotally attached under the front section. Data are transmitted from each device and each communication partner to the server via the Internet.