Advanced Laser Scattering Technology - Accurately detects PM1.0, PM2.5, PM4.0, and PM10 particles as small as 0.3m with high resolution Long Lifespan & Anti-Contamination Design - Patented airflow technology prevents dust buildup, ensuring 8+ years of maintenance-free operation High Accuracy & Wide Range - Measures 1-1000 g/m with 10% , ideal for both indoor and outdoor air quality monitoring Fast Response & Multi-Parameter Output - Provides real-time PM mass & particle count data with 1-second sampling intervals Compact & Easy Integration - Small 40.6x40.6x12.2 mm size with UART/ digital interfaces for seamless connectivity Type:Gas Sensor Mass concentration: 1-1000 g/m number concentration: PM0.5-PM10 (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: plastic Package Contents: 1 x SPS-30 PM2.5 PARTICLE 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.