This air detector can help you check the air condition, it is a good helper for home inspection, greenhouse planting, warehouse carbon dioxide detection, etc feature: Small size, light weight, easy to carry, easy to use and carry. Equipped with high quality temperature sensor and humidity sensor for fast and accurate detection The 2.8-inch LCD screen with backlight clearly displays the current values of CO2, temperature and humidity. The colored circle will change based on the current CO2 value Simple operation, no need to calibrate after power on, automatic work and detection Support 240~360 minutes long standby time Widely used in home use, educational institutions, agricultural planting, greenhouse planting, warehouse operations, material processing, etc color: White Charging: USB Type-C interface CO2 detection range: 400~5000PPM CO2 detection sensitivity: 1PPM Applicable temperature: -1℃~+70℃ Packing size: 140*125*42mm / 5.5*4.9*1.7in Packing list: 1 * Air Detector + Charging Cable