0-9999 Portable Infrared CO2 Detector Temperature Humidity Carbon Dioxide Meter Gas Quality Monitor Electronic Instrumen

Description The carbon dioxide detector uses the absorption principle of infrared light source NDIR to detect carbon dioxide gas in the on site environment This product has the characteristics of temperature humidity AV color screen display alarm setting rechargeable lithium battery or separate external USB power supply sensor service life ≧8000 hours stable data convenient carrying etc Specification Model Tc 10ACarbon dioxide measurement range 0 9999Resolution 1Accuracy ±70 3 of readingTemperature measurement range 20 60℃Humidity measurement range 0 99 Temperature accuracy ±2℃Humidity accuracy ±3 Battery Built in 18500 lithium batteryWorking hours can work continuously for more than 8 hoursPower USB 5VSize 80 x 80 x 55mmPPM reference value 400 450PPM Excellent The usual outdoor air level 450 700PPM good typical value in a well ventilated living space 700 1000PPM slight pollution poorly ventilated living environment1000 2000PPM moderately polluted air level that is insufficient drowsy and enough to cause complaints2000 5000PPM heavy pollution stagnant stale sultry air level It causes headaches and drowsiness accompanied by lack of concentration decreased concentration rapid heartbeat and slight nausea Exposure to more than 5000PPM severe pollution may cause severe hypoxia resulting in permanent brain damage coma and even death Application areas 1 Public places In crowded places such as meeting rooms classrooms exhibition hal