Fillibar is right -- I have 3 and they work fine, but I wouldn't try to use them for anything that can't be dimmed. I believe they CAN be set not to fade on/off, but that requires setting a Zwave parameter on the switch, which the A+ does not yet support. From the factory, they always fade on and off -- at least all 3 of mine do. Plus there is always the chance you might accidentally dim one when you mean to turn it on/off, and that could damage whatever is attached. I haven't tried the non-dimming version of this switch (Linear WS15Z1) so I don't know if the A+ supports that or not.