Features: Advanced multiple gas detection with precisions monitors formaldehyde (HCHO), TVOC levels through electrochemical+semiconductor sensors and immediate data logging. Features SEN+ calibration technology, temperature/moisture compensation, and fast led update within 5 seconds for reliable air quality analysis in diverse environment. Ideal for health awake family , new homeowners, parent monitoring nurseries, and professional maintaining office air safety standards. small design operates plugs and play in living room, renovated space, schools, or temporary workstations without installation requirements. This easy carry air quality monitor delivers lab grade accuracy for comprehensive indoor environment assessments through its multiple sensors blend algorithm and not interferences engineering. Specifications: Material: Plastic Size: 160x65x25mm/6.29x2.55x1inch Package Includes: 1xAir Quality Monitor note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.