AUTOMATIC SENSOR: Auto-on within 10 feet, auto-off after 12-17 seconds of no motion detected helps prolong battery life. It will turn on only when it is dark and when motion is detected. BATTERY OPERATED: This Motion Sensing Closet Light is powered by 4PCS AAA batteries (not included). Smart sensor chip with passive infrared technology, reliable performance and high sensitivity, accurately detect your movement. IDEAL LIGHTING: With 10 LED in each light, this motion sensor lights provides enough light to make sure you never stumble in the dark. Fantastic energy saving and environmentally friendly ensures an extra-long life for your light. 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. WARM PROMPT: This light can only be turned on in darkness environment. It won't turn on if the light sensor has been detected by the enough light. Please DO NOT install this light in high temperature place, otherwise, high temperatures will affect the adhesive strip, and then the light will slide easily!!