Level one, which is significantly thinner than our old test, proved inconsequential to the remote - or any other light source for that matter. Levels two and three were also little challenge, although off-angle performance began to suffer. Level four continued to prove reliable for direct use, while off-angle operation was almost completely eliminated. Level five once again proved functional, but at this point off-angle operation was completely impossible. And that, as it turns out, was the top level achieved by the RM-V310 - with level six absolutely no commands made it through, although positioning the remote approximately one foot closer to the receiver did restore functionality.

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Final thoughts.

If the Sony RM-AX4000 could be compared to a Mercedes S-Class, then the RM-V310 is more like a Mini Cooper. It'll get you around, but the ride isn't especially smooth. If you plan on using this universal remote with at least four devices, I recommend you look a little further up the model spectrum to at least the level of the Sony RM-VL600, which is still quite inexpensive and yet infinitely more customizable. It really is convenient to be able to put an extra function exactly where you want it - and turn your entire system on with a single button push!

But if this is the limit of your search, remember to double-check that your component brands are covered, and know what you're purchasing: a simple universal remote control for operating basic device functions.