CO2 Detector, Carbon Dioxide Indoor Air Quality Monitor with Portable Mini Tester, LED HD Screen, Temperature, Humidity&PPM Levels, Audible Alarm for Grow Tents, Home&Cars

4-in-1 Detector : The CO2 detector features color LED HD display which is 2.8″ 320 x 240 resolution,4-in-1 tester with carbon dioxide detection range of 400-5000PPM,temperature detection range of 0-50°C and humidity detection range of 0-99%RH,Easy for you to identify and read.
Advanced technical support: Mini CO2 meter uses high precision NDIR sensor technology to accurately detect CO2 level, when the CO2 in the air exceeds the set alarm value (alarm value: 1000PPM),Remind you to open windows，keep fresh air.
Portable Carbon Dioxide Detector: This mini compact body is made of lightweight material with hollow back design for easy portability, it can be used in any scenario such as kitchen, bedroom,office,school,car,hotel,travel,party and other places where there is gas air pollution.
USB rechargeable battery: Built-in 1600mAh high-capacity rechargeable battery and USB charging cable can be used continuously for about 12 hours when fully charged,allowing you to take it with you wherever you go.
Warranty Policy: The CO2 detector needs to be automatically calibrated for 1-2 minutes each time it is switched on.If there is any problem with our detectors, please contact us and we will refund or replace 100%.