The reason I bought it was to ensure compatibility between my Nikon X1 transmitter and my AD360 handheld and also to give me HSS. He gives a link. However, the HSS function is VERY inconsistent. The device often fails when I use HSS with my Nikon camera. If I disable HSS on the AD360 the problem goes away. I'm not sure if the problem is with the AD360 or with the remote control. Since I won't be using this unit with HSS, I'm keeping the remote to myself.