Features: 3.5-inch TFT full-color display, resolution 480RGB x 320Dots, Angle view up to 160 degrees, adjustable backlight brightness. High accuracy carbon dioxide detector with temperature humidity display. This CO2 monitor is equipped with a high-precision sensor. Portable size, lightweight, easy for carrying. Co2 sensor, accuracy: ±70ppm /±3%, range: 400~4000 PPM, single response time: 2 seconds (s), power-on response time: ≤2 minutes (Min)Temperature sensor, resolution: 0.04℃, accuracy: ±0.3℃, repeatability: ±0.1℃, range: -40℃ ~ 125℃, response time: ≤5 seconds (s). Humidity sensor, resolution: 0.7%RH, accuracy: ±3.0%RH, repeatability: ±0.1%RH, range: 0%RH ~ RH, response time: ≤8 seconds (s).USB(mini) interface DC5V/1A charging. 3000mah polymer lithium battery power, with overcharge and overcurrent double for protection circuit, can be recharged use, long standby for time. Specifications: Material: ABS Size: 100x78x58mm/3.94x78x58mm Co2 sensor, accuracy: ±70ppm /±3%, range: 400~4000 PPM Temperature sensor, resolution: 0.04℃, accuracy: ±0.3℃ Humidity sensor, resolution: 0.7%RH, accuracy: ±3.0%RH Power: 3000mah polymer lithium battery Package Includes: 1x Air Quality Monitor note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.