Cable Distance:Up to 4000ft Transmitter-Receive UTP Cat 5 or better. Point to Point transmission of real-time PAL,NTSC or SECAM single channel CVBS video signals. Image figure enhanced function in output of CAT5 video receiver. 1to 2 buffered splitting outputs for DVR and monitor (UST101AR-2) Lightning protection, Transient protection, ESD Protection, power line contact protection, damaging voltage spike Problems are eliminated. Dimensions: 94X84X22mm, GND screw connector.