Lemonbest&reg; Pack of 2 LED Energy Saving Motion Activated Sound Sensor Toilet Light Battery-powered Green Red Night Light Lamp Works only at night; Power by: 2 pcs AA battery(NOT Included) It is a dream to find your way easily and safely without any worries! Switch Type: Induction (Sound and light control) It turns on when you approach the toilet in dark, and turns off after you leave, shining gentlely. It is smart, energy-efficient light that makes the bathroom safe and easy to use at night.