Three-mode switch: automatic, the night light does not turn on during the day when it is bright enough, on (permanent light, motion sensor off), off. Automatic: the light turns on automatically turns on when the sensor comes within 1.8m and turns off automatically after 15-20 seconds 【Battery operated】No wiring required, requires 3 AAA 1.5V batteries (not included). Please use rechargeable batteries if you wish to keep it. Lightweight and portable design: ideal for any home use. Please note that there are only 3 screws on the base of the lamp. Motion sensor for automatic on/off operation: the light does not turn on during the day when it is is bright enough