If your Remote Control did not work, please make sure: 1) The IR cables are not swapped. The IR sensor extension cable has one round IR receiving terminal and a stereo plug. The IR blaster extender cable has three IR transmission cubes and a mono plug. 2) The IR receiving frequency band is correct. Press the IR key on the remote control provided for changing the band. There could be different IR frequency ranges from different remote controls. The IR blaster covers 3 different frequency ranges with central frequencies at 36 kHz, 47 kHz and 56 kHz.