"Warm White LED Plug-in Night light 1.They will lower brightness levels if any ambient light is near which reduces overall energy consumption and is a nice feature. 2.These lights Are equipped with a very fast-acting sensor module that is unbelievably quick to any fluctuation in lighting. There is no need to worry about it covering up another socket either as they are small enough not to block. 3.The use of energy saving and long life of LED light source,can practice work more than 50000 hours 4.Plug in the power,night light according to the ambient light brightness automatic regulating LED brightness 5.The LED's themselves are bright enough, but they're not blindingly bright and only really provide enough light to see your immediate surroundings (and hazards), just as a night light should. 6.You can get it to shed a bit of light in a hallway, kitchen, or bathroom otherwise you might find yourself plodding along in the dark."