Feature: 1. Auto Sensor: Using infrared sensor technology and automatic light detection technology, when a hand approaches the door lock, the LED light installed above the door lock automatically illuminates 2. Delay Off: The lamp will light up when people come, and it will automatically shutdown after a delay of 5 seconds when people leave 3. Long Service Life: Using high performance LR06 battery, it can work for more than 6 months(3-5 times/day), long service life 4. Easy to Install: Double sided tape installation, no wiring, no need to knock on the wall to punch holes, convenient and fast, can be used in multiple scenarios, can be used for stairs, door locks, kitchens, makeup mirrors, etc. 5. Easy to Use: No need to fumble in front of your door in the dark, enter your home with peace of mind. When you go out, you don't have to lock the door in the dark Specification: Item Type: Keyhole Light Weight: Approx. 54g / 1.9oz Product Size: Approx. 8.2 x 4.8 x 3cm / 3.23 x 1.89 x 1.18in Induction Mode: human body infrared sensor Induction Control: light sensor (working at night, standby during the day) Sensor Sensitivity angle: 60 degrees Sensor Sensitive Distance: within 3 m Applicable Battery: one AA battery (battery not included) Number of LED: 4 LED Life: 100,000 hours Delay Time: when people come, the lights will turn on, after people leave, the lights will be delayed for 5 seconds to turn off automatically Battery Life: using high performance LR06 battery can work for more than 6 months (3-5 times / day). Package List: 1 x Keyhole Light(battery not included)1 x Manual1 x Double Sided Tape