Welcome to our shop<br>1. High Precision Detection: Utilizes infrared semiconductor sensors to provide accurate detection of carbon dioxide levels, ensuring stable performance and reliable results.<br>2. Air Convection Design: Features an air convection design for more precise detection results, with a detection range of 400ppm-5000ppm, making it suitable for various environments.<br>3. 4-Color Circle Design: The 4-color circle design indicates different air quality levels - green for 0-999ppm, yellow for 1000-1999ppm, orange for 2000-2999ppm, and red for 3000-3999ppm. Above 4000ppm, all 4 colors will flash, providing clear visual signals for air quality monitoring.<br>4. Wide Applications: Suitable for various applications including agricultural planting, greenhouse vegetables, production warehouses, material processing, and home interiors.<br>5. Product Size and Shipping: The product size is 11.2*8*3.5cm, and each order includes 1 piece of the carbon dioxide detector.<br>100% 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 satisfactory after-sales service.