| Display | LCD size : 28 mm x 19 mm. |
| Circuit | Custom one-chip of microprocessor LSI circuit. |
| Sensor Structure | The polarographic type oxygen probe with an incorporated temperature sensor. |
| Operating Temperature | 0 to 50 .°C |
| Power off | Auto power off saves battery life, |
| Data Hold | Freeze the display reading. |
| Sampling Time of display | Approx. 1 second. |
| Operating Humidity | Less than 80% RH. |