At one end of the wire is a 3.5 mm Jack plug. On the other end of the wire is presumably a glass LED.
When connected to the phone, nothing happens. The LED does not start to glow.
Also, this wire doesn't work as a microphone. It's also not an earpiece.
What is it for?
Please don't post about US Politics. If you need to do this, try !politicaldiscussion@lemmy.world
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
Reminder: The terms of service apply here too.
Logo design credit goes to: tubbadu
It's part of an IR Blaster setup. That looks like the "blaster", aka the IR LED Transmitter. Most receivers have multiple ones to catch reflections and such
I also have some that look just like that, and it's the blaster bit because it stickies directly to the face of the device to control buried in a cabinet. The led is shielded and stuck directly next to the other devices receiver.
Suffice it to say, there's no standard. And if the OP doesn't know what it is, they probably don't have the rest of it to make it do anything cool. Last I checked they were about $5 on Amazon for the whole getup, so I'd just e-waste that.