Welcome to our store!</br> 1、Large screen design, clear and easy to see. Carbon dioxide 1s/time real-update time display 2、High-performance CO2 sensor chip is accurate and with better durability 3、Used for carbon dioxide detection, hazard assessment, temperature and humidity detection, intelligent alarm system, gas detection algorithm, multiple anti-interference, convection technology, greenhouse compensation calibration 4、Used in agricultural plants, greenhouse vegetables, production warehouses, material processing, home interiors, etc. 5、Rely on more professional infrared optical principles to accurately and quickly detect carbon dioxide <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Indoor Air Quality Monitor Model: K02 Applicable Temperature: -1~70℃ Display Mode: LCD screen + backlight Standby Time: About 300-420 minutes Charging Standard: 5V 1A Material: PVC+ABS Built-in Battery: 1200mah (polymer lithium battery) CO2 Measuring Range: 400-5000ppm Accuracy: 1ppm Sensor: CO2 sensor, temperature and humidity sensor (digital sht20) Temperature Accuracy: ± 0.3 Humidity Accuracy: 3% Instructions for Use: 1. Start button, press the button for 3 seconds, rotate on the machine and start checking, no calibration is required. 2. Press the button for 3 seconds, the machine will shut down. <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Indoor Air Quality Monitor 1 x USB Charging Cable 1 x User Manual (Customer Satisfaction) - is our priority. If you notice any problems with the products after receiving the goods, such as damaged goods or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sale service.</br>