I bought two sets (the other one is battery operated), but this is my favorite because it is rechargeable. The power button has 3 positions: on, off and Auto (movement activated). Having kids in my big house, I have been installing all kinds of sensor lights so they can go to the restroom, kitchen or living room without even bothering me while I sleep. I will install this set close to the sink and power outlet for easy recharging. Nice product that includes charging USB cable, double tape, installing hardware (if you want to screw it instead of gluing it), the mounting clip attachment (yes, the lights assemblies are detachable, which is great!). Very satisfied.