Hello,
In the blog video where you test your Extech UVC light meter:
https://blog.adafruit.com/2020/04/25/us ... netextech/
... at the 2:45 minute mark, you test an UV-LED panel, which you mention doesn't really work. That's exactly what I've been trying to buy! (but is out of stock). I guess you bought it from Intl. Light Technologies (last two items on this web page):
https://www.intl-lighttech.com/uva-and- ... plications
... specifically, I need the E395-50-MODULE (the 395 nm UVB band of LEDs). If that is the one you bought, would you be willing to sell it to me? Your Extech meter was for the UVC band I believe, while the two models from ILT are UVA or UVB, so I'm guessing your panel does work.
I also sent you an email to support@adafruit.com.
Thanks!