USB interface for the connection to the PC USB port del PC, allowing the local programming and the firmware update of the following products: control panels Elisa (cod.11.895), Elisa 24 (cod. 11.897), Eva 8/24 (cod. 11.908); auto dialers Combinet 4 (cod. 11.711) and Microcombivox (cod. 11.720); interfaces and GSM devices Microlink (11.672), LinkDin (11.671) and front gate opener New Apriphone (61.870). The USB cable is necessary for the connection to the PC (61.942).