The Remote Control Repeater Kit contains all the necessary equipment to remotely operate 4 components (expandable to 12 components) using standard remotes, allowing control of devices behind closed doors or other obstructions. This kit includes an IR Distribution Block, a Mini IR Receiver, two Dual IR Emitters (4 total emitters), and an AC/DC adapter. An LED light on the receiver confirms IR communication. The IR Receiver should be placed in a central and accessible location. It is connected by a 9ft. cable to the Distribution Block, which repeats the signals through IR Emitters to your electronic components. This allows the installation of electronic components in many different places, including entertainment centers, closets, or even in different rooms! This kit is self-contained and easy to connect. Existing remotes can be used. Product Sizes IR Receiver: 2.25in. (L) x 0.5in. (W) x 0.5in. (H) IR Distribution Block: 2.5in. (L) x 2.25in. (W) x 1in. (H)Please Note: IR receivers placed near plasma displays can receive interference, as plasma displays emit IR frequencies during use. AT&T U-Verse cable boxes are not compatible with this IR Receiver Kit.