Huilier B0505S-1W DC-DC 5V Power Supply Module 4 Pins Isolated Converter

good morning all I have post so it's post bag okay let's start with this one it is of no commercial value it's completely and utterly worthless big knife which is also blunt because I threw away those nasty plastic green ones what have we got oh it's another one of these oh no it's two of these little dc-to-dc converters so these are two tiny little devices a morn Sun B 0 5 0 5s so I'm pretty sure they are 5 volts in 5 volts out 1w so that's one watt now one watt at 5 volts is only 200 milliamps now but these a long time ago so they disappeared off my history but this one looks favorite it appears to have two of the mourn son ones it's a good price and there are a lot sold and I think what I'm going to do in future with these eBay links is rather than link to the actual one I bought I'm going to try and find a search string which works well for these so on this one I found 5 volts isola