Intelligent carbon dioxide value tester uses air semiconductor-sensor to monitor temperature and humidity of air quality Adopts superior electrochemical detection module, with high accuracy, stable performance, can accurately detect carbon dioxide value Strong anti-interference ability, low consumption and long service life The product does not need calibration, it can be tested after booting, and it can accurately detect carbon dioxide Hundreds of ventilation holes at the back of housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, etc Different colors corresponding to different air quality, green 400-450ppm, blue 451-700ppm,Purple 701-1000ppm, yellow 1001-2000ppm, red 2001-5000ppm Name: Air Quality DetectorBattery: 1 * 3 7V, 1200mAh lithium battery (NO included)Screen type: 2 8 inches TFT-LCDScreen resolution: 240 * 240Response time: Less than 1sTest temperature range: -10 to 70Humidity test range: 0-99%RHWorking voltage: 5V/1A adapterMaximum power: recharging current 600mARecharging: USBMaterial:plasticcolour:blackPackage Contents:1 x Air Quality MonitorOnly the above package content, other products are not included Note: Light shooting 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