Feature:1. Real-time temperature, humidity, CO2 concentration, HCHO, TVOC can be measured at the same time.2. 1s automatically refresh the detection data, monitor in real time.3. 2.9-inch color LCD display, large enough to view the data.4. Intelligent alarm sounds up once the data exceed the value.5. USB rechargeable air quality detector built-in with 1200mAh lithium battery.Specification:Features:Real-time temperature, humidity, CO2 concentration, HCHO, TVOC can be measured at the same time.1s automatically refresh the detection data, monitor in real time.2.9-inch color LCD display, large enough to view the data.USB rechargeable air quality detector built-in with 1200mAh lithium battery.Can be used in home, greenhouse, breeding, school and other public places to monitor carbon dioxide and temperature/humidity.Specifications:Color: Black / White (Optional)Material: ABSCO2 Detection Range: 400-5000ppmCO2 Detection Sensitivity: 1ppmTVOC Detection Range: 0~2ppmTemperature Measurement Range: 0~50Temperature Measurement Accuracy: ±1Humidity Measurement Range: 0~99%RHHumidity Measurement Accuracy: ±2%RHWorking Voltage: 3.7VCharging: DC5V/1AError: ± 50ppmSensitivity: 0.45 ± 0.15MA/ppmAnti Interference: 47.22%Response Time: ≤60sItem Size: 105 * 95 * 45mm / 4.13 * 3.74 * 1.77inItem Weight: 112g / 3.98ozPackage Weight: 215g / 7.60ozPackage Size: 17 * 14 * 5cm / 6.69 * 5.51 * 1.97inPacking List:1 * Air Quality Detector1 * Type-C Cable1 * Manual (English)Package List:1 * Air Quality Detector1 * Type-C Cable1 * Manual (English)