PIR infrared detection within 3 meters detects motion and automatically lights the keyhole area as you approach, eliminating the need to fumble for the keyhole in the dark. 4 LED light provides bright, clear illumination in darkness, improving safety and making it easier to see the door when unlocking at night. Fully automatic induction activates when a person approaches and turns off after 5 to 7 seconds, so you never have to operate the switch manually. Wireless and battery powered, this keyhole light runs on AA batteries (not included) with no wiring or complicated installation required. Use scenarios: - At the front door or entryway of a home for convenient night entry. - In apartments or dorm buildings where hallway lighting is dim and entry lighting is helpful. - By garage doors, utility rooms, or secondary doors where you want quick illumination without wiring.