By the central command box, external equipment cable, charger, handle and other parts. 1, to achieve the interconnection of voice signals between multiple devices, including radio, landline, mobile phones, can quickly achieve any radio station or equipment coordination. 2, through the device with its own handle to achieve the function of central command, can be connected with all the equipment groups command and dispatch. 3, through the cable, can be the intercom radio communication distance extended far, greatly expand the application environment of the equipment (building interior, underground, etc.), suitable for all kinds of clusters, conventional radio signal complement, as well as the extension of signal coverage.
