This IR over HDMI cable remote extender allows for IR signals to be passed through HDMI cable.It uses your existing HDMI cable to carry the IR remote control signal so you can still use the IR remote to control the HDMI equipment from one room to the other through the traveling of existing HDMI cable.Simply connect the HDMI IR adapters to each end of the HDMI cable, and hook up the HDMI ends between the HD source and HD TV display.This IR remote extender kit is an easy and low-cost way for extending the IR remote control range and controlling HDMI source device that is not within line of sight.The maximum effective range for this IR control extender kit is 300 feet or 100 meters.Easy SetupEach of the 2 IR to HDMI adapter has a 3.5mm jack for the plug-in of IR remote receiver pigtail or IR transmitter pigtail so IR remote control signal can be merged with HDMI signal together into one cable run.One IR adapter should go into a HDMI input of HDTV or HDMI monitor.The other IR adapter connects into the HDMI output of HDMI equipment such as Blu-ray player, HD cable box, video game console, etc.Wide-Range Support Of IR Remote Signal TypesThis IR extender supports IR signals from 30~60KHz, which means that it works with "dual band" IR devices, which covers most of the home A/V devices.Easy CEC/IR Remote SwitchingThis IR remote over HDMI kit uses the unused CEC channel of your HDMI cable for transmitting the IR signal through HDMI cable run.Both IR adapters have a switch that allows you to switch between IR injection mode and CEC channel pass-through.Easy Extender Wire ExtensionThe kit has a long IR emitter/blaster wire of 48" long and a 56" long IR sensor wire. Both can be extended by joining with longer 3.5mm audio extension cable for longer distance.