Fangrui Product Details Accurate detection,Accurate and error free,More accurate and effective data,Harmful gases have nowhere to hide Air Convection Design,More sensitive and accurate Instrument three-dimensional air duct design,lmproving the airflow penetration rate and accurately,calculating the content of small organic matter Carbon Dioxide: 400-5000 ppm卤5%卤50ppm CO2 Sound Alarm Range: (default) 1500 ppm Temperature: 0鈩?- 50鈩?卤 1.5鈩? / 32掳F - 122掳F(卤2.7掳F) Humidity: 20%-80% RH(卤5%) Battery: Built-in lithium ion polymer battery (3.7V, 1000mAh) Input: Type-C, DC 5V Storage Temperature: -10掳C-55掳C / 14掳F-131掳F Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:B:Orange Material:plastic Package Contents: 1 x CO2 Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a li