10YEAR&reg; Mushroom LED Night Light Lamp with Voice and Light Sensor (White)-Used in Darkness Light sensor control and Voice&Light sensor control for your choice (slide switch), it will turn on automatically in darkness, or be activated by sound Three types:sound,on,photo. You can adjust the comfortable type as you need. Sound:Voice mode, voice control the light work and brightness in night, you can set up the time last 30 seconds or 120 seconds Photo: Light-sensitive mode,the light will on all the time in night On:Long lighting mode, it will on all day and night lights.