1、[3 IN 1 AIR QUALITY MONITOR] Used for carbon dioxide detection, hazard assessment, temperature and humidity detection, with functions of intelligent alarm system, gas recognition algorithm, multi anti interference, air convection technology and greenhouse compensation calibration. 2、[ACCURATE AND FAST] Use more professional infrared optical principles to accurately and quickly detect carbon dioxide and update data in real time. 3、[LARGE SCREEN AND HIGH PERFORMANCE CHIPS] The large screen design is clear and easy to see. The use of high performance chip makes the measurement more accurate. 4、[HIGH QUALITY MATERIAL] Made of high quality ABS material, sturdy and durable, and long service life. Easy to operate and use. 5、[WIDE RANGE OF APPLICATION] Suitable for carbon dioxide concentration detection in offices, homes, gymnasiums and other usage scenes. Item Type: Carbon Dioxide Detector Model: ZN-AZ-2CO1 Material: ABS Battery: 18650 1500mAh 3.7V (Battery Included) Charging Power Supply: DC 5V 500mA Micro USB Purpose: Suitable for carbon dioxide concentration detection in offices, homes, gymnasiums and other usage scenes. Basic Parameters: CO₂ Measurement Range: 400-6000 PPM ±50 ±5%PPM CO₂ Measurement Accuracy: 1PPM 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 Cable 1 x Manual