| Test principle | infrared principle |
| Display mode | 128×64 matrix dot LCD |
| Test range | 0 ~ 30/50/99.9% CO2 |
| Accuracy | ≤± 1.2%FS |
| Repeatability | ≤± 1% |
| Response time | T90≤15S |
| Sample gas temperature | -10℃~ 50℃ |
| Sample gas flow | 300 ~ 600ml/min |
| Sampling mode | sample gas pass-in or extraction |
| Sample gas pressure(without pump) | 0.05Mpa≤entrance displayed pressure≤ 0.35Mpa,steady pressure environment |
| Sample gas pressure(with pump) | micro-positive pressure, micro-negative pressure or ordinary pressure |
| Appearance Size | 155mm×260mm×340mm(H×W×D) |
| Serving life | >24 months (under normal use) |
| Gas circuit port | NPT 1/8 internal thread |
| Battery specification | lithium battery,11000mAH ,12.6V/2Ah |
| Charging source | AC170 ~ 264V 50/60Hz |
| Install mode | portable mode |