Welcome to our store! 1. Multifunctional: Monitors and displays real-time CO2 concentration per cubic meter, detects and shows environmental temperature and humidity to help users understand their surroundings. 2. Alarm Reminder: In warning mode, it changes color to alert users to environmental conditions. Automatically switches between horizontal and vertical displays for easy reading. 3. Color Screen: Features a smart color screen with clear, easy-to-identify numbers, aiding users in understanding their environment and meeting various needs. 4. Compact and Portable: The CO2 detector is compact and portable, making it easy to carry without taking up too much space, and can be installed at home. 5. Wide Application: This temperature and humidity tester is widely used in various situations such as agricultural cultivation, production warehouses, laboratories, homes, offices, gyms, etc. Item Type: Carbon Dioxide Detector Material: ABS Weight: Approx. 206g / 7.3oz Voltage: 5V Current: 500mA Response Time: 10 seconds CO2 Detection Range: 400-6000ppm CO2 Detection Accuracy: ±50ppm, ±5% reading TVOC Detection Range: 0-2.0mg/m³ HCHO Detection Range: 0-0.6cm/m³ Temperature Measurement Range: -10℃-50℃ Temperature Measurement Accuracy: ±2℃ Humidity Measurement Range: 0-99%RH Humidity Measurement Accuracy: ±3%RH Battery: 1500mAh Polymer Lithium Battery (included) 1 x Carbon Dioxide Detector 1 x USB Data Cable 1 x Manual