Russound 858PPLASMAINWALLBONE Plasma In-Wall Bone SaphIR IR J-Box Receiver Provide A Window From Your Handheld Remote To Your Source Equipment Out Of The Line Of Sight, The Optical Design Results From Painstakingly Testing All The Major Brands Of Plasma Displays To Ensure Superior Noise Reduction. Additionally, The 858P Is Immune From Most Sources Of IR Interference Such As Compact Fluorescent Lighting. The 858P Is Compatible With Most Brands Of Remote Controls And Popular Audio-Video Components. It Connects Directly To A Russound Irb-6 Or 857 Connecting Block, Or To An Irb-1 In-Wall Jack.