Detailed Product Description Waterproof Video Door Phone System: 1.Brief Introduction(1 ... 1.0mm2 + 1*75-5.(7).Audio Cable:RJ45 port and CAT5 cable.(8).Balanced Transmit:Video and audio are transmitted ... Protocol:RS485.(11).Cable Specification:(a).Power&Lock cable:RVV2*1.0mm2;(b).Audio cable:CAT5.(c).Video cable:SYWV75-3(100m ... :fixed case,screw,manual,patch cord,network cable.7.Certificate: CE/RoHs.