The one in the box is unused. The one that is out of the box has only been used once. Pyroelectric infrared sensor that lights up when a person approaches. It automatically turns on when the door is opened and automatically turns off when the door is closed. Embedded LED. Compared to incandescent light bulbs, it consumes less power and has a lifespan of about 30 times longer, so there is no need to replace it. Batteries are sold separately. Uses 3 AAA alkaline batteries (LR03 AAA 1.5V). The light bulb cannot be replaced. Indoor use only. Double-sided tape included. - Brand: OLEBY - Type: Motion sensor light - Size: Approximately 8cm x 8cm Thank you for viewing.