Why do you need Bat Car Door Light? You can see your feet clearly when getting on and off the car, adding a sense of security to yourself. The cute bat pattern reflected on the ground also adds character to the car. Installation Precautions: 1. Battery installation instructions: Put 3 AAA (1.5V) batteries into the battery box, and install them according to the positive and negative poles marked on the battery box. Then close the battery compartment. 2. Shadow lamp installation instructions: stick the magnet to the bottom of the frame. Stick the headlights on the door. The distance between the magnet and the lamp is about 10mm. When you close the door, the magnet is located under the car's marker light sensor. 3. Automatic control and manual control: a sign appears on the ground when the door is opened, and it automatically closes after 2 minutes. If you want to turn the light on/off, just press the button on the light head. Package Included: 2x Bat Door LED Projector Decorative Lights (One set includes 2 pieces, it is recommended that you buy 2 sets for the 4 doors of the car)