I bought this as an alternative to the more expensive Nikon remote - what a mistake. I don't know whether this is just the one I received, but as there are no previous reviews, it can't be clarified.
Now, I remembered to change the "Shooting Mode" setting on my camera to Remote and pulled the plastic strip out the back which keeps the battery separated to save that until it's sold. First go, a photo..great! Any time after that, nothing. I have tried all possible angles, including just pointing the two at each other with barely any distance at all but have nothing.
So now it just sits in the camera bag. A shame. I could invest in a battery to see if that's the problem but they're as much as the remotes really.