Product name: Intelligent Carbon Dioxide Detector Product model: T3 Detection technology: air convection detection technology Applicable temperature: 1-50 Display mode: LED digital display + LCD screen + backlight Detection range: 400-5000ppm Product size: about 143mmx68mmx90mm/5.63x2.68x3.54in Working voltage: 5V Battery capacity: 3 AA batteries Charging interface: TYPE-C Display specification: about 87x53mm/3.43x2.09in Colour:black Material:plastic Package Contents: 1 x Air Quality Detector 1 x Data Line 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.