Air Quality Monitor, 5 in 1 Carbon Dioxide Monitor CO CO2 Detector Protable, NDIR Sensor, Rechargeable(USB) CO CO2 Monitor, 400-5000 ppmTemperature(°F) and Relative Humidity Meter - gelvshidianzi, Air 08

• Multifunctional Air Quality Monitor- It can accurately detect the current air concentration of CO CO2 (PPM), temperature (℉) and humidity (RH). It can help you understand the indoor air quality and provide a safe environment for your home. CO2 Concentration Test- This CO2 detector is designed with three different CO2 concentration stages - normal stage (400-999ppm), warning stage (1000-1999ppm), and dangerous stage (2000-5000ppm). Please note: The carbon dioxide level in the air is not a fixed data, it changes at any time within a certain range, so the reading on the display fluctuates. Convenient Calibration - The carbon dioxide monitor is plug and play, with a built-in accurate air quality infrared (NDIR) sensor, it only takes 30 seconds of initialization after touching the switch to get stable and accurate data. Meanwhile, you can connect any 5V adapter to support charging while working. Rechargeable Battery Power - Our indoor air quality detectors comes with usb cable and built-in 2500mAh Li-ion battery with up to 24 hours of battery life, supporting long time continuous use.The large and clear LED display is designed to increase the brightness of the displayed data, so that even the elderly can see it clearly., Manufacturer: gelvshidianzi