SITERWELL 3-in-1 CO2 Detector Monitor, Indoor Air Quality Monitor with Real-Time CO2 PPM Levels Display, CO2 Meter with Test Button, Temperature & Humidity Detection, During Cal Wildfire Season, White

3-in-1 Multifunction – CO2 detector with built-in high-precision infrared CO2 sensor and digital temperature and humidity sensors for accurate air quality tracking. This CO2 detector can monitor your surrounding CO2 concentration (400-5000 PMM), temperature (-5℃-50℃/-122℉) and humidity (0%-99.9% RH) in real time.
More User Friendly Care – Our CO2 detector will automatically reduce the brightness of the screen in a dark environment, and users are also free to set the no-disturbance mode, thus reducing the impact on users’ sleep. The air quality tester has a lifetime of up to 10 years. At the end of its life, the screen will show “end of life”, so there is no need to worry about detection.
LED Digital Display – This air quality monitor has a display for easy viewing. With touch buttons for easy operation. Traffic lights and voice alarms provide quick and intuitive alerts of abnormalities.
High Accuracy – Our GS241T composite CO2 temperature and humidity alarm uses a high accuracy sensor. CO2 detection accuracy ±(50ppm+5% reading), temperature detection accuracy 0.5 or 0.9, and humidity detection accuracy ±5% RH. The tester is built with a 24-hour automatic calibration algorithm program, eliminating the need for manual calibration.
Stable Power Supply – The air quality monitor is powered by an external AC power adapter with a built-in backup rechargeable lithium polymer battery that supports 12 hours of operation after an AC power failure and alerts the user to recharge when the battery is low.