I have a PSU (wall wart) with a symbol on the label that I don't recognise. I'm curious as to what it means. It's probably some safety symbol of some form, but not one I have ever seen before. I'm sure it's obvious though:
It's printed on the label with all the other safety symbols, ratings, etc.
Underneath it, I don't know if it's related to the symbol or not, is an ambient temperature rating of
ta=40°C and an IP rating of
If you're interested, here's the entire label, so you can see it in context (and yes, I know those current ratings are completely wrong - 0.5A in, 0.5A out?!?!):