Features: This detectors can detect the temperature, humidity, CO2, TVOC, HCHO, PM2.5, PM-1.0 ,PM-10 for you at one time-, you can view the data you care about. The colorful screen allows you to see different- values at a glance, and the backlit display makes it easy to see data at night. This air-quality detecor can be held easily, and it also can be placed on your desk for use. Using air semiconductor and infrare sensors, high-performance chip, detection is more accurate, high accuracy. Support to connect to the phone APP- via bluetooth-compatible, which can store up to 60-days of data. Specifications: Material:ABS Battery: Built-in 3.7V, 2000mAh Lithium-Battery Current:260mA Screen Size:2.8'' Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Detector- 1x USB Cable 1x Manual