Monoprice 1000-Feet 23 AWG Cat6 500MHz UTP CMR Solid Bulk Bare Copper Ethernet Cable
Description
Get Cat6 cable for good shielding from interference and future-proofing your installation.
Editor Remarks
The cost of the cable is cheap considering the amortized cost for how long you will be using this thing--basically, forever, since it's being buried behind the wall. Definitely get 1000ft if you're running to multiple PoE cameras from a central location.