Features: Suitable for HVAC application. Simple appearance. Multi-measurement. Sensor type: CO2 NDIR sensor / Temp. & humidity MEMS sensor Measuring range: 0 ... 2000 PPM / 0 ... 50 C / 0 ... 100%RH(Non-condensing) Output: 0 ... 10 V / 4 ... 20 mA Accuracy: 40 PPM 3% of reading / 0.5 C / 5 RH IP rating: IP20