| Parameters | Technical indicators |
| PH3 measuring range | 0-20ppm |
| Measurement method | electrochemical sensor |
| Measurement accuracy | ±3% F.s of reading |
| Response time (T90, seconds) | less than 15 seconds |
| Warranty period | The host is guaranteed for 2 years, and the gas probe is guaranteed for 1 year |
| Baud rate | 2400/4800/9600 |
| Communication port | RS485 |
| Power supply | 12V-24V DC |
| Power consumption | ≤0.15W (@12V DC, 25℃) |
| Operating temperature | -20 to +50℃ |
| Working humidity environment | 15-95%RH (relative humidity), no condensation |
| Dimensions | 110×85×44mm3 |