| Item | Technical Specification |
| Measurement Principle | Electrochemistry |
| Range | 0-14PH |
| Supply | 7-30VDC(power consumption<0.2W) |
| Accuracy | ±0.05PH |
| Resolution | 0.01PH |
| Response time | <10s( soil moisture>30%) |
| Stability | ≤0.01PH/24h |
| Output Signal | 4-20mA & RS485 at the same time |
| Calibration Cycle | Every 6 month |
| Operating Environment | 0-+80℃(<0.6MPa) |
| Cable length | 5m(default),customizable |
| Probe material | 304SS |
| Ingress Protection | IP68 |
| Storage | 10-60℃@20%-90%RH |
| PH SCALE | |||
| PH value | Description | PH value | Description |
| <4.5 | Strongly acidity | 7.5-8.5 | Faintly alkalinity |
| 4.5-5.5 | Acidity | 8.5-9.5 | Alkalinity |
| 5.5-6.5 | Faintly acidity | >9.5 | Strongly alkalinity |
| 6.5-7.5 | Neutral | ||