Monitor your indoor air quality with this advanced 3-in-1 CO2 Meter, designed to provide real-time measurements of carbon dioxide concentration, temperature, and humidity. Featuring a vibrant color screen display, this portable device ensures easy readability even in low-light conditions, making it an essential tool for homes, offices, shopping malls, hotels, and more. Key Features: · **Color Screen Display:** The bright color screen offers clear and intuitive readings, allowing you to quickly identify air quality levels, even in the dark. · **3-in-1 Detection:** Accurately measures CO2 concentration (400-5000 ppm), temperature (0-50℃), and humidity (0-99% RH) simultaneously, providing comprehensive environmental monitoring. · **Dynamic CO2 Indicator:** Equipped with a color ring that changes according to the current CO2 concentration, giving you an immediate visual alert of air quality status. · **Portable and Compact:** With a lightweight and compact design (90 x 70 x 40 mm), this CO2 meter is easy to carry and perfect for use anywhere you go. · **USB Rechargeable:** Conveniently powered via USB charging compatible with any mobile device charger. The battery icon flashes during charging and stops once fully charged. · **High Accuracy:** CO2 accuracy of ±1 ppm and humidity accuracy of ±2% RH ensure precise and reliable measurements for better air quality assessment. · **Long Battery Life:** Built-in 3.7V 1200mAh battery supports 4-6 hours of continuous use after a quick 2-3 hour charge. Specifications: · Material: Durable ABS · CO2 Detection Range: 400-5000 ppm · CO2 Accuracy: ±1 ppm · Temperature Range: 0-50℃ · Humidity Range: 0-99% RH · Humidity Accuracy: ±2% RH · Size: 90 x 70 x 40 mm · Battery: 3.7V 1200mAh · Charging Time: 2-3 hours · Working Time: 4-6 hours Package Includes: · 1 x CO2 Meter · 1 x Charging Cable · 1 x Instruction Manual This versatile CO2 meter combines portability, accuracy, and ease of use to help you maintain a healthy indoor environment by continuously monitoring air quality factors. Ideal for personal, professional, and commercial settings, it offers a reliable solution to track and improve your indoor air conditions.