Features & Application:
Similar to 201-C, different point: connector without cable, ideal for use with handheld pH meters; it can also be used with an extended cable. (201-A)
Similar to 201-C, different point: electrode housing comes with a thin diameter, not only suitable for daily measurement, but also ideal for small volume samples or test in test tubes. (206-C)
PC housing, with a built-in temperature sensor, measuring pH and temperature simultaneously, ATC function. (201T-F(S))
Parameters
| Model | 201-A | 206-C | 201T-F(S) | 
| Measuring range | 0 to 14pH | ||
| Temperature range | 0 to 80℃ | ||
| Junction | ceramic | ||
| Reference | Ag/AgCl | ||
| Body | PC | ||
| Dimensions | Φ12 x 170mm | Φ10 x 126mm | Φ12 x 160mm | 
| Connector | BNC without cable | BNC | |
| Temperature sensor | / | / | platinum or thermistor |