Feature:1. Carbon dioxide detector: adopts good quality sensor module, with good accuracy, stable performance and strong anti-interference ability.2. Low wear and long service life. Accurately detect carbon dioxide. The large screen displays power, CO2, temperature and humidity.3. Equipped with a large screen, different font colors display different air quality, green, yellow, orange, red. Specification:Product Name: Smart Carbon Dioxide DetectorProduct Model: T3Product Material: PC+ABS Detection Technology: Air Convection Sensing Technology Suitable Temperature: 1-50C Display Frequency: LED Digital Display + LCD Screen + Backlight Sensing Range: 400-5000ppm Product Size: About 143mm 68mm 90mm/5.63*2.68*3.54in Working Voltage: 5V Battery Capacity: 3 AA Batteries Charger Interface: TYPE-C Display Specification: About 87*53mm/3.43*2. 09in Net Weight: About 159g Gross Weight: About 256g Packing List:Air Quality Detector*1Data Line*1Instruction*1Color Box*1Note: Please allow small size tolerances due to manual measurement, and the lighting in photography may make color difference than the real thing.