Absolutely wonderful. It works exactly when I need it to and not when I don't. With vertical opening covers they kept on opening to phantom motion, even when there was no motion and no significant airflow change. I think it was reacting to shadows. But this sensor gets it right without driving me mad, and without the same sound I dreaded hearing from the other one. Plus, it's neater/cleaner, and I don't have to have additional height where I place the trash can for the lid to open. I love it. Worth the money. Oh, plus the deodorizer really does work.