Hello! Although I'm not new to the photography world, I don't have much knowledge about wireless stuff. I wanted to purchase primarily for wireless shutter remote. And for future use I figured I should pick up something that was compatible for off camera flash so I wouldn't have to buy that separately later on. I currently own an Olympus EM1 and the FL-36R. I would assume I have to buy 2 things? One would be the thing that goes on the hotshot and a second thing would be the remote? Or do they come together?