This worked great for sending my IR remote signals through the wall to my stereo receiver/amplifier. My device has a USB port, so I didn't have to search long for power. Not to mention the fact that it's next to the extension cord. I taped the transmitter right where the IR sensor is and it works 100% of the time. I could probably use a shorter version, I didn't really need 25ft, but it works exactly the same.
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