1Carbon dioxide detector with high accuracy and stable performance, short response time. 23.2?inch full color TFT display, can show date, time, CO2, humidity, temperature (/ switchable) and other information. 3Professional grade detection technology, built?in sensor, support real time CO2 monitoring. 4The detector will alarm you once the CO2 is exceed the setting value to ensure your safety. 5Store up to 999 sets of data and have historical data trend charts for you to view. 6Comes with rechargeable lithium battery, also can be powered by 5V USB cable. Compact size with portable storage box, easy to operate and carry.1 xDetector 1 x Data Cable 1 x Bracket 1 x Manual 1 x Tool Box Item Type: CO2 DetectorMaterial: ABS Plastic_x000D_Input: (USB) 5V, 2A_x000D_Measuring Range: 0-9999PPM_x000D_Resolution: 1PPM_x000D_Accuracy: 40PPMRdg10%_x000D_Temperature Measurement Range: -10-60 (-14-140)_x000D_Temperature Measurement Accuracy: 1 (2)_x000D_Temperature Resolution: 0.01/_x000D_Humidity Measurement Range: 0-100%RH_x000D_Humidity Measurement Accuracy: 3%RH (20-80%RH)_x000D_Humidity Resolution: 0.01%RH_x000D_Operating Temperature Range -10-60 (-14-140)_x000D_Working Humidity Range: 0-99%RH_x000D_Storage Temperature Range: -40-80 (-40-176)_x000D_Working Current: 90-300mA_x000D_Charging Time: 3 Hours_x000D_Power Supply: 1Pc 3.7V, 2600mAh 18650 Rechargeable Lithium Ion Battery/Powered By 5V USB Cable_x000D_Record Group: 999 Set 1Carbon dioxide detector with high accuracy and stable performance, short response time. 23.2?inch full color TFT display, can show date, time, CO2, humidity, temperature (/ switchable) and other information. 3Professional grade detection technology, built?in sensor, support real time CO2 monitoring. 4The detector will alarm you once the CO2 is exceed the setting value to ensure your safety. 5Store up to 999 sets of data and have historical data trend charts for you to view. 6Comes with rechargeable lithium battery, also can be powered by 5V USB cable. Compact size with portable storage box, easy to operate and carry.1 xDetector 1 x Data Cable 1 x Bracket 1 x Manual 1 x Tool Box