The Vanco IR-EXPKIT is an Expandable IR Kit with Signal Adjustments that allows IR signals to be distributed from one display location to multiple sources. Have all sources hidden and control sources as if they were right under the TV. The IR-EXPKIT includes four IR emitters, with additional emitters sold separately, an IR distribution block, and one IR receiver. The IR receiver and connecting block feature an LED for talk back, which lights up any time an IR signal is sent, giving verification of remote commands. Need to control more sources? Not a problem as there is the capability of connecting two IR blocks together using the RJ45 expansion ports using a Cat5e/6 cable. Each IR output on the connecting block features an adjustable signal gain, turn down to prevent IR signals being sent to other sources, or turn up for sources that require a stronger IR signal. For the ability to place multiple sources in a hidden location such as an equipment rack, while keeping the display location clean, the IR-EXPKIT is the perfect solution.