Never search for your keyhole again! Handy, super-bright LED light automatically turns on at the slightest sound—makes it easy to open your door in the dark! (Light-sensitive, so it won’t operate during the day.) Self-stick backing ad­heres to any flat surface. High-impact plastic is weather-resistant. Uses 2 AAA batteries (not incl.). Set of 2; each is 3 3/8" x 1 1/8".