Etekcity DC Female to 8 Male Power Splitter Cable: Used with CCTV camera systems, great for hooking up multiple security systems or other devices that use a DC 12V 2.1mm plug. 1 Female plug and 8 Male plugs 1 Female plug and 8 male plugs For adapting power supply/cable to CCTV cameras. DC 12V 2.1mm plugs Great for CCTV camera and all other devices that can handle 12V DC adapters