I needed these so I could extend the Harmony IR Blasters into another room. With this adapter, i was able to use readily-available stereo headphone extension cable, rather than seeking 2.5mm mono coax to go from 1 room to another. They work great!
This is a great product at a great price. We have a project at work where we are using 150 Slingboxes. I don't care for the IR emitter eyes that come with the Slingboxes but they are 2.5mm and most 3rd party IR emitter eyes are 3.5mm. This was a great solution for utilizing 3rd party IR emitter eyes with all Slingbox models.
Extending IR Blaster for Harmony Hub with Stereo Cable
Working well. Bought these to run an extension on my Harmony hub. Used a standard quality stereo extension cable terminated with mono adapters. The second receiver is 65 feet away from the hub and functions flawlessly with Alexa.