Originally Posted by
guitarguy
I have this unit from Monster and have used it all over the world (India, China, Europe) with no issues. I use simple plug adapters to plug in locally. I can't post URL's yet so check Amazon for the "Monster MP OTG400 BK Outlets To Go Power Strip - 4 AC Outlets - Black"
I have two that just live permanently in my computer backpack and my luggage.
If it's the same one I have, it's officially rated for 120V only. That said, it seems to work on 240V fine from your datapoint and others I've read elsewhere.
Personally I went ahead and bought
this one (was a ~$5 Amazon Warehouse deal at purchase time). I made sure to check the pins with a multimeter when I received it and they were wired correctly; the miswiring seemed to be a thing mentioned in older reviews so that might be something to keep in mind if you go this route. The particular one I purchased also doesn't have USB, but that's not an issue for me as my USB adapters are dual voltage and aren't a hassle to carry around.