4port video and audio

4port video and audio switcher,4port av switcher,video and audio switcher,4 Rds AV signal input,1 Rd AV signal output,selection SPECIFICATIONS: Video: Input Level Resistance: VS 0.8-1.0Vp-p/75Ω Output Level Resistance: VS 0.8-1.4Vp-p/75Ω Support: 50Hz-5.5MHz Input Connector: 4Rd Output Connector:1Rds Audio: Input Level Resistance: 2V(RMS)/47KΩ Output Level Resistance: 2V(RMS)/1KΩ Support: 10Hz-20KHz,0dB Input Connector: 4Rd(L+R) Output Connector:1Rds(L+R) Dimenssion: 217X80X38(mm) Housing: Metal