... Audio: 2-way, ModelASP-801HCASP-801HDMain processor2- composite video, PAL or NTSC format; BNC interface level: 1.0Vp - Impedance: 75Ω; ... group, composite video, PAL or NTSC format; BNC interface level: 1.0Vp-p, Impedance: 75Ω, real-time four-screen monitor output; 1 ... -30 frame/secondSymbol stream formCan choose the video stream or composite stream Audio and VideoNetwork agreementSupport TCP/IP,HTTP, ...