High-concerned chemical: None - Our LED Smart Ceiling Lamps are designed with your safety in mind, ensuring no harmful chemicals are used, making them ideal for any room in your home. Installation Method: Self-contained - Easy and straightforward installation process with a self-contained system that doesn't require professional help, allowing you to enjoy your new lighting setup in no time. Flux Range: 2000-82000 - Whether you need soft ambient lighting or bright light for detailed tasks, our lamps offer a wide range of flux to suit all your needs, enhancing the functionality and aesthetics of your space. Smart Device Features: Yes - Equipped with smart technology, these lamps can be controlled via an app or remote, offering customizable settings like dimming and color changes to create the perfect atmosphere for any occasion.