Feature 1、Carbon dioxide detector with high accuracy and stable performance, short response time. 2、3.2‑inch full color TFT display, can show date, time, CO2, humidity, temperature (℃/℉ switchable) and other information. 3、Professional grade detection technology, built‑in sensor, support real time CO2 monitoring. 4、The detector will alarm you once the CO2 is exceed the setting value to ensure your safety. 5、Store up to 999 sets of data and have historical data trend charts for you to view. 6、Comes with rechargeable lithium battery, also can be powered by 5V USB cable. Compact size with portable storage box, easy to operate and carry.Item Type: CO2 DetectorMaterial: ABSPlasticInput: (USB) 5V, 2AMeasuring Range: 0-9999PPMResolution: 1PPMAccuracy: ±40PPM±Rdg10%Temperature Measurement Range: -10-60℃ (-14-140℉)Temperature Measurement Accuracy: ±1℃ (±2℉)Temperature Resolution: 0.01℃/℉Humidity Measurement Range: 0-100%RHHumidity Measurement Accuracy: ±3%RH (20-80%RH)Humidity Resolution: 0.01%RHOperating Temperature Range -10-60℃ (-14-140℉)Working Humidity Range: 0-99%RHStorage Temperature Range: -40-80℃ (-40-176℉)Working Current: 90-300mACharging Time: 3 HoursPower Supply: 1Pc 3.7V, 2600mAh 18650 Rechargeable Lithium Ion Battery/Powered By 5V USB CableRecord Group: 999 Set .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xDetector1 x Data Cable1 x Bracket1 x Manual1 x Tool BoxNotePlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.