Features: The MPM10AG sensor ensures precise measurement of indoor air quality, providing reliable data for monitoring purposes. The sensor promptlys detects changes in air particle levels with high sensitivity and a fast response time. Versatile Applications Suitable for various indoor environments such as homes, offices, schools, hospitals, and manufacturing facilities. Made with ABS and metal materials, the sensor is built to last. Compatible for air quality monitoring instruments and home system, making it convenient to incorporate into existing setups. Specifications: Material:ABS+Metal Size:Approx.35x38x12mm/1.37x1.49x0.47inch Package Includes: 1x Lasers Dust Particle Sensor note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.