| Gas Sampling Method | Natural diffusion |
| Detecting Gases | Combustible Gas, H2S, CO, O2 |
| Accuracy | ≤±5% F.S. |
| Response Time | ≤30s |
| Indication | LCD displays real-time and system status; LED, audio and vibration alert for gas leakage, fault and low voltage |
| Working Environment | -20°C ~ 50°C, <95%RH (no dew) |
| Power Source | DC3.7V Li-on battery, 2000mAh |
| Charging Time | 6h ~ 8h |
| Working Time | ≥8h continuously (without alarms) |