This 2-2150 MHz four-way splitter is used to split a single line from a SWM Switch or LNB to four lines to feed four receivers. Indoor/outdoor SWM splitter features one input and four outputs, one of which passes DC power, which is labeled in red. This high isolation wideband splitter is compatible with all SWM and MRV installations. This green label DIRECTV-approved splitter for multi-room viewing is the splitter to use for DIRECTV whole-home service.