CCTV Security Camera 2.1mm 1 Female to 4 Male Output Power Splitter Cable Adapter for CCTV For CCTV Accessories This DC Power Adapter Y Cable Pigtail splits 1 power signal into 4 and is useful for powering multiple cameras from one central adapter 1 DC Female to 4 Male Power Splitter Cable Plug Diameter: 2.1mm inner, 5.5mm outer package included:2pcs 1 to 4 DC plug Convenient and cost effective way to power up 4 cameras with 1 power adapter