Sensor: Features a motion sensor to turn the light on when it senses your key. Keyhole light: Get a keyhole automatic sensor light! LED: Features 4 LEDs, giving plenty of light for you to find the keyhole. Powered by: One AA battery (not included). Made using ABS. Great for: Keyholes as well as cabinets, drawers and dark nooks and crannies. Installation: Easy installation with the attached double sided adhesive tape. Keyhole Automatic Sensor Light | Living Social