| Detect item | Oxygen(O2) |
| Measuring range | 0~25%VOL |
| Resolution | 0. 1% |
| Accuracy | ≤ ±2% FS |
| Temperature range | -10℃~50°C |
| Response time | ≤ 15 s |
| Recovery time | ≤ 15 s |
| Sensor principle | Principles of electrochemistry |
| Alarm mode | Sound and light dual alarm |
| °C/°F unit switching | √ |
| Display screen | Color display |
| Charging function | USB |
| Operating temperature | -10℃~50℃ |
| Operating humidity | < 95% RH |
| Measure the temperature | √ |
| Battery operating time | > 90 hours |
| Power supply | 3.7V lithium battery |
| Product net weight | 161g |
| Product size | 68x31x183mm |
| Quantity of carton | 40（PCS） |
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