CO2 Measuring Range
                            (0-5000) ppm
                         
                                                
                            CO2 Display Resolution
                            1ppm (0-1000); 5ppm (1000-2000);  10ppm (>2000)
                         
                                                
                            CO2 Accuracy
                            (0~3000)ppm: ± 50ppm ± 5% of  reading (take the Maximum), (>3000)ppm: ± 7% of reading 
                         
                                                
                            CO2 Repeatability
                            20ppm at 400ppm
                         
                                                
                            Temp Compensation
                            ±0.1% of reading per ℃
                         
                                                
                            Response Time
                            <2 min for 63% of step change  or < 4.6 min for 90% step change
                         
                                                
                                                
                            Operating Temperature
                            32°F ~ 195°F (0°C ~90°C)
                         
                                                
                            Temp Display Resolution
                            1°F / 0.1°C
                         
                                                
                            Temp Accuracy
                            ±2°F / ±1°C
                         
                                                
                            Response Time
                            <20 minutes (63%)
                         
                                                
                                                
                                                
                            RH Display Resolution
                            1% Main interface display, 1% Max/Min display
                         
                                                
                            RH Response Time
                            <20 minutes (63%)
                         
                                                
                            Operating Temperature
                            32°F ~ 122°F (0°C ~ 50°C)
                         
                                                
                            Storage Temperature
                            -4°F ~ 140°F (-20°C ~ 60°C)
                         
                                                
                            Operating & Storage RH
                            0-95%(non-condensing)
                         
                                                
                            Operating Voltage
                            DC(5±0.25)V