| Display | 13 mm ( 0.5" ) LCD, 3 1/2 digits. |
| Measurement Range | Dissolved Oxygen - 0 to 20.0 mg/L. |
| Resolution | 0.1 mg/L. |
| Accuracy | ± 0.4 mg/L. (after calibration within 23± 5 ) |
| Sensor Temp. Compensation | Automatic from 0 to 40 °C |
| Panel adj. knob | ZERO knob, CAL knob. |
| Battery | 006P DC 9V battery ( heavy duty ). |
| Power Consumption | Approx. DC 3.5 mA |
| Operating Temp | 0°C to 50°C (32 to 122 °F ). |