Does not work at all

This was the second wireless IR remote control extender I tried in the past four weeks. This one did not work, at all. None of the devices I tried to control, two TV sets, a cable box, and a DVD player, responded to the receiver no matter how I tried to position the receiver. No response whatsoever. I could see the LEDs one the transmitter as well as the receiver blink when the buttons on the remote control were pushed, but no response from the devices being controlled.

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