2X Mini Indoor Carbon Dioxide Concentration Detector Portable Quality Monitoring CO2 Detector

Brand new and high quality Made of high-quality materials Material:ABS colour:White Package Contents: 2 x Quality Monitoring Detector 2 x English manual 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 little different from the real thing. The measurement allowed error is +/- 1-3cm.