Welcome to our store！</br> 1、Multi Function: It integrates the three functions of carbon dioxide detection, temperature detection and humidity detection, allowing you to intuitively understand the air quality of the living space. 2、Infrared: Using infrared sensor to monitor carbon dioxide has faster speed, high accuracy, stable performance, strong anti interference ability, low consumption and long service life. 3、Large Screen: Equipped with a large screen, different font colors display different air quality, which is convenient for you to check the air quality at any time. 4、Heat Dissipation: The left and right vents not only speed up the convection between the air and the machine for effective detection, but also provide excellent heat dissipation. 5、Wide Applications: This temperature and humidity tester suitable for a wide range of places, such as schools, hospitals, restaurants, shopping malls, offices, homes, etc. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Carbon Dioxide Detector Material: ABS, Electronic component Gross Weight: 213g / 7.5oz Product Size: 9x7x3.5CM / 3.5x2.8x1.4in CO2 Detection Range: 400-6000ppm ±50 ±5%PPM CO2 Detection Accuracy: 1ppm Temperature Measurement Range: -10℃-50℃ Temperature Measurement Accuracy: ±2℃ Humidity Measurement Range: 0-99%RH Humidity Measurement Accuracy: ±3%RH Battery: Built in rechargeable 1500mAh lithium battery, Model: 18650(Delivered with built in battery) <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 Carbon Dioxide Detector 1 x USB Data Cable 1 x Manual Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>