Temperature Measurement Range: -20C ~60C: +/-2C Humidity Measurement Range: 5%~ 95%RH: +/- 5%RH Product Name: Smart indoor Multiple Air Quality Monitor Model No: PTO2-Plus Co2 Measurement Range: 400 - 5000ppm Co2 Accuracy: +/-50ppm or +/-5% of reading CO Measurement Range: 0-999PPM CO Accuracy: +/-10ppm or +/-10% of reading Co2/CO Resolution: 1ppm TVOC Measurement Range: 0 ~19.99mg/m3 TVOC Resolution: 0.01mg/m3 note: Different batches may result in different product appearances, printed text, and colors, which do not affect usage. Plug Type: EU Plug, it applies to Indonesia, Germany, France, Spain, Italy and so on voltage: AC100-240V Material: plastic colour: silver Package Contents: 1 x Detector 1 Adapter 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.