4X Air Monitor CO2 Carbon Dioxide Detector Air Quality Temperature Humidity Monitor Fast Measurement Meter for CO2

6. We all know that air is an indispensable part of lives. The quality of air is affecting body and mind the air is colorless and tasteless t measure it with the eyes. At this time we need an air tester to help to monitor the air quality. CO2 measuring range: 400-5000ppm Temperature measuring range: 0-50℃ Humidity measuring range: 0%-99%RH Battery: 3.7V 1200mAh Sensor: semiconductor TVOC sensor Item size: 90 x 70 x 35mm / 3.5 x 2.8 x 1.4in Material:ABS colour:Black Package Contents: 4 x Air Quality Analyzer 4 x Charging Cable 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.