ADDERLINK AV201R AUDIO / VIDEO EXTENDER - RECEIVERCascadeable Receiver Only, Extends Video, Audio and Serial up to 300 metres, Receiver Duplicates Input allowing 2 AV Outputs, RS232 allows control and management of remote screens, Uses UTP or STP Cable, 1600 x 1200 at 200M and 1280 x 1024 at 300M, DeSkew, Local Port, Spike Protection, May be linked to a second receiver for a second output.