Welcome to the store! Real-Time Monitoring: Monitors and displays real-time carbon dioxide concentration, humidity, and temperature per cubic meter, making air quality easy to understand. LCD Display: Large LCD screen displays various air data in real-time with clear numbers that are easy to identify and read. Alarm Function: When the gas concentration exceeds the warning value, an alarm is automatically triggered, and the screen color changes to remind the user. Easy to Install: Small and portable, easy to carry, doesn't take up too much space, and can be installed at home, in the office, or in the classroom. Wide Range of Applications: Suitable for offices, homes, gyms, and other usage scenarios for CO2 concentration and air quality detection. Item Type: Air Quality Detector Model: 2CO1T Material: ABS Battery: 18650 1500mAh 3.7V (built-in battery) Charging Power Supply: DC 5V 500mA Micro USB Purpose: Suitable for detecting carbon dioxide concentration in offices, homes, gyms, and other usage scenarios CO2 Measuring Range: 400-5000 PPM ±50 ±5%PPM CO2 Measuring Accuracy: 1PPM TVOC Measuring Range: 0-2.0mg/m³ HCHO Measuring Range: 0-0.6mg/m³ Temperature Measuring Range: -10~50℃ Temperature Measuring Accuracy: ±2℃ Humidity Measuring Range: 0%~99%RH Humidity Measuring Accuracy: ±3%RH Includes: 1 x Air Quality Detector (built-in battery), 1 x USB Cable, 1 x Manual Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!