Any smart floodlight will have a motion detector that will turn on its light when someone enters its detection zone. What makes the Philips Hue Outdoor Motion Sensor special is that it can trigger ...
Safehome.org on MSN

How Does a Motion Detector Work?

First developed for World War II, motion detectors have come a long way from the radar that pilots used way back then.
This affordable motion sensor bin delivers quiet performance clever design and a surprisingly premium feel for under £40 ...