BinaryABC DIY Stick-on Portable 10-LED Wireless Motion Sensing Lights, Silver Battery Operated: powered by 4pcs AAA batteries(not included) Simple installation: an adhesive strip with magnetic fields is easily attached to and detachable from the lamp body. No tools, screws or nuts are required Automatic sensing: the light will light up when you get within 3 meter of it and will go out 15 seconds after you walk out of its sensing range 10 pcs bright white LED, energy-saving and environment friendly T-02 Night Light won't light up during day time when it is bright enough. - Don't putLED T-02 motion activated LED night lights too close.