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https://www.mhrep.com/product/hm218-microfono-de-control-remoto-secundario-commandmic-para-la-f5400d-f6400d-requiere-rmk5-opc2373-o-opc2374/
HM218 Micrófono de control remoto secundario, COMMANDMIC, para la F5400D / F6400D. Requiere RMK5 + OPC2373 o OPC2374