Name: Smart CO2 Controller Model: AQM-356 Voltage: 100-240V Plug: US / EU Plug (optional) Carbon Dioxide measurement: CO2 Measuring range: 0-5000ppm (1) Accuracy at 0~3000 ppm: 50ppm or 5% of reading, whichever is greater (2) Accuracy over 3000 ppm: 7% of reading Display Resolution: 1 ppm (0-1000); 5 ppm (1000-2000); 10 ppm (2000) Repeatability: 20 ppm at 400 ppm (standard development, 10 readings in 1 minute) Temperature Dependence: 0.2%/°C or 2ppm/°C of reading, whichever is greater, reference 25°C Pressure dependence: 0.13% of reading per mmHg (corrected for altitude entered by user) Response time: 2 min for 63% of step change or 4.6min for 90% step change Warm-up time: 30 sec Operating Temperature: 0& 8451;-50& 8451; Storage temperature: -20& 8451;-60& 8451; Operating and storage RH: 0-95%, non-condensing   Package Included: Smart Carbon Dioxide Controller*1 Power Adapter*1 Manual*1