Name: Door Lock Light Sensor Size: 81*46*30mm Material: ABS Features: 1. The LED automatic induction door lock light uses human infrared sensor technology and light detection technology. 2. When the door lock is closed, the LED light installed above the door lock automatically turns on. 3. Lights turn on when people are present and automatically turn off when they leave. 4. Allows you to enter your home easily and conveniently. 5. No need to fumble outside your door. 6. No need to touch the black lock door when you go out. Precautions: 1. Do not place the product on a location with glass doors or significant temperature changes. 2. As this product uses infrared sensors, it requires a relatively stable environment. 3. Keep the light away from monitors and TVs. 4. Pay attention to the temperature and humidity of the working environment, as this can affect battery life. 5. Use a good quality LR06 (AA) 5 battery or a rechargeable battery. 6. After the lights turn off, there is a delay of 6-8 seconds before it can work again. 7. LED lights should not directly shine into people's eyes, especially children. 8. When installing the product, do not place it where children can easily reach it to avoid injury.