 up to 70 feet, sometimes more. And field and range can be adjusted to avoid coming on when a car just drives by. Now, here's a tip. Motion detectors can also allow you to operate that light manually, usually by flipping the switch off for a second and then back on. And this allows you to keep that light on at night when you want to, even when there's no motion. So it's kind of a great option there that helps you out when no one's home and helps you out when you are.