The timer is usable, but needlessly complex, and the interface is limited enough that it's hard to see where you went wrong. For instance, if you don't hit the "confirm" button after setting times, the times aren't saved. If you don't hit the "confirm" button after even just *viewing* the times, the already programmed times will stop working. There are so many modes that it's easy to be in the wrong mode. It keeps working once you have it set up, but every time you touch it in any way, you have a good chance of making it not work. And since it has a seven day program, it can take a week to find out if you've got it set up correctly. It's a good thing that there's a keyboard lock button!I used to own another timer from BN-LINK, which sadly they no longer sell. (I guess BN-LINK and NEARPOW are different companies, but both timers have very similar software with very similar limitations and bugs, so I am dubious.) I can’t use their most comparable current offering (BN-LINK FD60-U6) because it can’t tune down to the second. But that previous timer was better than either of the current NEARPOW or BN-LINK timers. The old one had fewer modes. It was smaller, so that it only blocked one outlet. (This blocks both outlets in a fixture, no matter which you plug it into.) It also had an always-on pass through outlet, so that with a standard two outlet fixture you could plug something into the timer and then you could still plug in two non-timed things.So overall, usable but hard to use, and not as good as the older product.