Ways to put down less than 20%, not owner occupied, conventional?

[Sierra Swords]

Hi All! I am a 25 year old new investor who just purchased her first duplex out of state a month ago. I am looking for ways to buy another with less than 20% down? Can you get any kind of conventional loan, not owner occupied, for less than 20%? are there certain banks that might do it, even if it's hard to find? The area I currently live in doesn't make sense to buy in (central NJ) so I bought my first in my hometown of Westfield MA, where I have my dad to manage on-site issues, while I rent here in NJ. Owner occupying in NJ isn't really an option (though I know it would allow me low money down), but again, returns are so poor here. 

Any suggestions are welcome! Thanks!