High-concerned chemical: None - Ensuring a safe and environmentally friendly product, this sensor is free from high-concern chemicals, making it ideal for educational and professional use where safety is a priority. Origin: Mainland China - Manufactured with precision and standards in Mainland China, this sensor offers reliable performance and durability for various applications in weather monitoring and altitude projects. Compatibility and Versatility: This sensor supports both I2C communication, making it highly versatile for integration with a wide range of microcontrollers and systems, enhancing its usability in complex projects. Color: As Shown Material: PCB Package Contents: 1* TSL2591 light Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.