This is my second sensor can from Simplehuman. It is a great improvement from the 45 liter, battery-operated only sensor can which I still use. It is much quieter and very easy to clean since it is all stainless steel. It works great with the power adapter. I have not tried using it with the batteries. The power adapter would be a good option for all of their sensor cans since the batteries wore out pretty quickly on my first one. I only rated it with 4 stars since I noted a couple of quirks. One being that the lid has closed while wiping food off a plate into the sensor can. It would be nice for the lid to stay open when the sensor is blocked, not just when it detects motion. The second quirk happens when the plug is unplugged from the sensor can and then plugged back in. The sensor did not work after the plug was put back in. I just unplugged the power adapter from the outlet, then plugged it back in and the sensor worked fine. Other than those two exceptions this is a great product!