Got this for the convenience of sanitary hand washing while cooking, but after a few weeks it started going off randomly on its own. Now it doesn't work unless you press down on the battery cover on the bottom of the device. The batteries have been changed and it just seems to need additional pressure on the bottom in order to work, which defeats the hands free purpose. Its a great thing to have, while it works. I gave it a 3 star because of the fact that it stopped working properly already, otherwise it would get higher.