I believe any 3.5mm jack IR blasters will work, I remember someone else mentioning it, so I think their comment “You can purchase IR blazers with 3.5mm plugs” means this. If you live in the UK this link may help (they look identical to what you get in the box) and if I am wrong just send it back. https://www.amazon.co.uk/Bolongking-Extender-Extension-Transmitter-Compatible-Red/dp/B01MT59LFO/ref=sr_1_2?crid=2788LYMN9WPNY&keywords=3.5+ir+blasters&qid=1699296385&sprefix=3.5+ir+blasters%2Caps%2C129&sr=8-2