Description Features 5 V Micro USB Charge Large 2000 mAh capacity lithium battery Common Screen display Low battery warming Test Variables, Carbon dioxide (CO2), temperature, humidity Technical Specifications Display Mode 3.5-inch LCD TFT color screen CO2 Detection Range 400 ppm to 5000 ppm Detection Error Range CO2 ± (50ppm ±5%) Humidity Detection Range 15% RH to 90% RH Humidity Measurement Accuracy ±5% RH Working Voltage 5V to 1A Power Supply 2000 mAh Temperature Detection Range 50 °F to 122 °F (10 °C to 50 °C) Product Size 3.54 in x 3.54 in x 50 in (90 mm x 90 mm x 50 mm)
