this Aliexpress UV LED is optically indistinguishable from this Aliexpress blue LED

tried with UV reactive things and they also said nope

@uint8_t that's better than it (accidentally) being one of the dangerous UV types :>

@f0x the Dangerous actual UV-C LEDs are rare, have low efficiency, and are super expensive

UV-A isn't much of a concern, with B it starts to get interesting but not too bad at the usual power levels

welding arcs, on the other hand...

@uint8_t @f0x Meanwhile, the cheap purple LEDs I bought on Ali were far more UV than expected.