The built-in light sensor is also smart enough to measure ambient light so it knows when it's daytime and nighttime. This is important because the motion sensor can be configured to adjust your ...

The sensor does have some limits. It can only detect motion up to about 16.5 feet away. And while Philips will give you the option of reducing that — that is, only turning on lights when motion ...

An outdoor motion sensor light offers security and illumination. Our home security expert recommends six models, including battery- and solar-powered lights.