Item Type: Carbon Dioxide Detector Voltage: 5V Current: 500mA CO2 Measurement Range: 400-5000PPM CO2 Measurement Resolution: 1PPM TVOC Measuring Range: 0-2PPM Temperature Measurement Range: 0-50℃ Temperature Measurement Resolution: ±1℃ Humidity Measurement Range: 0 percent -99 percent RH Humidity Measurement Resolution: ±2 percent RH Battery: Polymer Lithium Battery 1200mAh (Battery Included) Charging Time: 2-3 Hours Working Time: 240-360 Minutes Product Size: Approx. 9x7x4cm / 3.5x2.8x1.6in Material: ABS Weight: Approx. 180-193g / 6.3-6.8oz 1,High accuracy measurement, it uses semiconductor detection technology to find air quality problems more accurately. 2,LED digital display and LCD screen, with backlight mode, the display is clearer at all times. 3,One key control, the surrounding environment can be automatically detected after pressing the switch for three seconds, real time monitoring once a second, the detection speed is fast, and more accurate values can be obtained. 4,1200mAh large capacity battery, standby time is about 240 360 minutes, can ensure long term use. 5,It can be widely used in agricultural planting, greenhouse planting, production warehouse, material processing, laboratories, households, etc.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1 x Air Quality Detector 1 x Manual 1 x USB Data Cable