This is a kitted item including the Kramer 711N and 712N.

The 711N is a twisted pair transmitter for composite video and unbalanced stereo audio signals. The 711N transmitter converts composite video and stereo audio to a twisted pair signal and the 712N receiver converts the twisted pair signal back into composite video and stereo audio signals.

The 712N Composite Video & Stereo Audio over Twisted Pair (Receiver) from Comprehensive/Kramer is the receiver unit of a paired kit that is designed for sending composite video and unbalanced stereo audio signals over twisted-pair cable. The unit a twisted-pair signal from the receiver, then converts it to composite video and stereo audio signals for output. This solution is well suited for use in educational institutions, broadcast studios, and medical facilities, among many other potential uses.