Motion activated lighting can also supply security for you when you are returning home after dark or if you venture outside to investigate a strange noise at night. Strategically placed, motion activated floodlights can illuminate the driveway, entryways as well as other walkways close to your home. Some insurance firms will even offer reduced rates for homeowners with this kind of protection lighting - check with your specific homeowner's insurance provider to see if you qualify.
The basic mechanics from the motion detection sensor is relatively straightforward. Most motion sensors are passive, and sense changes in heat, and pick up the change in heat from movement of objects through the sensor field. The sensor picks up rapid changes, and as a result, will trigger when an animal or person moves across the sensor range. The sensor is set to not react to gradual changes in temperature, such as the cooling effect of the evening. Keep this in mind when placing your motion sensor lights, to maximize performance for your needs. You will see motion sensor lighting with type of sensing technology referred to as passive infrared sensors, or PIR.
While slightly more costly than outdoor lighting that does not contain motion sensing technology, I think you will find that the relatively small difference in price gives big value and benefits in terms of convenience and security around you home.