This lighting system provides a functional, but very basic purpose: If the power goes out in your home or workplace, designated, wirelessly linked lights come on. Keep in mind that the lights will be activated whether it is dark or daylight.How does it do this? The "kit" comes with three ceiling lights, which mount just like smoke detectors, and three "path," or side lights. The ceiling lights require four C batteries each, and the path lights require four AA batteries each (none of these are included).The controller for these lights, which looks like a small television remote, takes rechargeable batteries, which are included. The controller plugs into an outlet, and when the power goes off, it triggers the six lights to come on throughout the house.To test the system, the remote can be pulled from the outlet to simulate a power outage. Note that the remote also lights up when a power outage occurs, and can act as a flashlight. Once the remote gets power again (the power comes back on, or you plug it back in after your test), all the lights go back off. You can also turn the lights on and off from the remote itselfKeep in mind that although Mr. Beams makes motion sensor lights, these do not have an option to be activated by motion and, as stated earlier, they do not have light sensors that keep them from coming on when the room is already well lit. The power goes off and the lights come on....period.A few other things to note:1) Quality-wise they are okay, but don't expect much. They are hard plastic and will undoubtedly break if dropped. The ceiling lights have a barely noticeable thin rubber ring around the inside, and with my set, when inserting the batteries I noticed that this was coming off of one of them and I could not get it properly re-seated.2) As far as range goes, they are excellent. I have a two-story house with a concrete second floor. I placed one light at the far end, upstairs, well away from the remote, which was downstairs, and it triggered the light without any problem.3) They are plenty bright for their purpose. If you place them properly (I turned off all the lights in my house and made it pitch dark to do this), they will give off more than enough light for you to make your way around the house to seek a more powerful flashlight, a camping lantern, etc., allowing you to avoid stubbing your toe or falling across furniture. No, your house will not be lit up just like the power came back on, and don't expect the remote to act as a 200 lumen flashlight....but then again, that is not really their intended purpose.Overall, this system serves a very useful and practical solution for power outages. I live in South Florida, and as hurricane season comes back around I may get to test them out for real.....but I hope not!If things change in any way I will update the review, but from my experience with them so far I do recommend them if you are looking for a low-cost emergency lighting system for your home.Also...if you decide to vote this review down for whatever reason, would you please leave a note as to why? I try to be as complete and objective as I can, and feedback would be helpful.Thanks!