The IR Extender cable enables you to conveniently ‘extend’ the range of the infra-red (IR) reception of your DVR+.(CM7500) This means that you no longer have to have your DVR+(CM-7500) in full view. You can have your DVR+ in a closet or cabinet, and only have the end of the IR cable visible.
Connect the 3.5mm plug into the "IR" port on the back of the DVR+. If you experience a short lag in obeying commands from your remote, pull the power for the DVR+, wait 10 seconds, then plug power back in to the DVR+.