| Detection gas | Oxygen O2 |
| range | 0 ~ 30% vol |
| resolution | 0.1% |
| Alarm method | Level 3 alarm |
| Temperature measurement | Yes. |
| Power | 3.7V lithium battery |
| Peak display | Yes. |
| backlight | Highlight Backlight |
| Low concentration alarm | Yes. |
| High concentration alarm | Yes. |
| Lock machine password | Can be set |
Warranty days: 365 days
1. For product quality problems caused by non-human products of instruments and equipment, the manufacturer will provide free warranty services during the warranty period;
2. There is no warranty period for fragile and consumable parts, and if you find product quality problems after receiving the goods, please apply for return and exchange within 7 days, and you will not wait for the overdue ones;