1、Small And Clear Display: This carbon dioxide detector is small and portable, and can clearly display the temperature and humidity of the environment. 2、Multi Function, Multi Application: 5 in 1 multifunction air detector, suitable for offices, homes, gymnasiums and other places. 3、Alarm Reminder: In the alarm mode, the user is reminded to pay attention to the environment by changing the color. 4、Data Display: It can detect and display the temperature and humidity of the environment to help users understand the environment. 5、Real Time Reading: Bluetooth data storage function, real time monitoring of environmental data, improve the quality of life. Item Type: Air Quality Detector Model: ZN-AZ-2CO3TB Material: ABS Battery: 18650 1500mAh 3.7V (Built-In Battery) Charging Power Supply: DC 5V 500mA Micro USB Purpose: Suitable for Carbon Dioxide Concentration Detection In Offices, Homes, Gymnasiums And Other Usage Scenarios CO2 Measurement Range: 400-6000 PPM ±50 ±5%PPM CO2 Measurement Accuracy: 1PPM TVOC Measuring Range: 0-2.0mg/m^3 HCHO Measuring Range: 0-0.6mg/m^3 Temperature Measurement Range: -10~50℃ Temperature Measurement Accuracy: ±2℃ Humidity Measurement Range: 0%~99%RH Humidity Measurement Accuracy: ±3%RH 1 x Carbon Dioxide Detector 1 x USB Data Cable 1 x Manual