<p> </p> <p>Carbon dioxide monitor with 3 detection values:</p> CO2 Temp Humidity <p>Features:</p> <p>Detection values for carbon dioxide, temperature &amp; humidity.</p> <p>This air quality monitor has a colour display screen to see the detecting data clearly.<br><br>This CO2 monitor can be used in your home, office, desktop, hotel, etc.</p> <p>This air quality monitor uses infrared detection technology, laser detection technology and electrochemical detection technology to show accurate data.</p> <p>There are four different colours to show the different qualities of the air being monitored: Green means the air quality is good and the colours ranging from yellow to orange to red mean a worse air quality is present.</p> <p>The temperature unit can be switch between degrees Celsius and Fahrenheit.</p> <p>Specifications:<br><br>CO2 detecting ranges: 400-5000PPM<br>Recharging method: USB 500mA Type-c interface<br>Battery: 1 * lithium battery, 1200mAh (included)<br>Item size: 90 * 70 * 35mm / 3.5 * 2.8 * 1.4in<br>Package size: 118 * 115 * 48mm<br>Package weight: 200g</p>