The 124 is a four output DMX splitter that also supports the RDM protocol. It is available with 3 pin XLR (model 124-3), 5 pin XLR (model 124-5), or RJ-45 connectors. Each output features its own driver circuit, insuring a problem on one output will not affect the other outputs. The four outputs share a common (pin 1s are tied together). The input is completely isolated from the outputs (there are no electrical connections between any of the input pins and any of the output pins).