I got these to put into my front porch lights since it is now getting dark before we get home and they could light up our front porch and walkway once we arrive. They fit into the base of our porch lighs perfectly and sense motion up to 30 feet away, which makes it very nice for being able to see the key holes once the sun goes down. Plus with them not being lit all the time I can just leave the light switch on and don't have to worry about running up my electric bill. Not that it would be much of an increase, these LED lights take almost nothing to power and will last a long time, much longer than regular incandescent bulbs will. Being outside I didn't have much hope on them lasting too long but after 2 months they are still going strong.
These are a great value, especially for the price, and will add some much needed convenience to your home.