| Carbon dioxide gas (CO2) | Oxygen (O2) | |
| working principle | Non-dispersive infrared absorption (NDIR) | Paramagnetic type |
| Preheat time | Less than 10 seconds | Less than 10 seconds |
| Measuring range | 0-20% | 0-100% |
| Linearity | <+/-2% | |
| Sampling method | Pumping | |
| Data output time | Output readings per second | |
| Calibration and calibration | Manual calibration and zero adjustment (standard gas calibration and high purity nitrogen zeroing before leaving the factory) | |
| Display | LCD screen | |
| Digital output | RS485/232 | |
| Relay output | Optional two-way switch output (alarm value setting) | |
| Operating temperature | 0°C-50°C (standard) | |
| Working humidity | 0-95% RH, non-condensing | |
| Supply voltage | 220VAC; optional 12VDC | |
| Power consumption | System maximum 16W | |
| Vibration | 2Hz-60 Hz, maximum amplitude 2mm | |
| Dimensions | 340*340*150mm (can be customized) | |