Embeded H.264 Video & Audio Encoder 4channels 7x24 non-stoping work Low cost of ... ,power switch ,power lightBack panelvideo input port : 4X BNC(composite)audio input port: 8XRCA(left channel,right channel &stereo)one USB2 ... portRJ-45 internet portRS232 port220V power inputAccessoriespower corduser manual (electronic file in CD)Internet protocolsstandard RTSP,HTTP,RTP,UDPSoftwareB/S structure ...