| Function Model | RM-220 Resistivity Monitor |
| Range | 0～18.25MΩ·cm |
| Accuracy | 2.0%(FS) |
| Temp. Comp. | The 25℃ basis, automatic temperature compensation |
| Operation Temp. | 0～50℃ |
| Sensor | 0.05cm-1 |
| Display | 2½ Bit LCD |
| Current output | — — — |
| Control output | — — — |
| Power | AC 110/220V±10% 50/60Hz |
| Working environment | Ambient Temp. 0～50℃, Relative Humidity ≤85% |
| Dimensions | 48×96×100mm(H X W X D) |
| Hole size | 45×92mm(H X W) |
| Installation Mode | Panel Mounted (Embeded) |