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. Automatic from 0 to 40 .
Panel adj. knob ZERO knob, CAL knob.
Battery 006P DC 9V battery ( heavy duty ).
Power Consumption Approx. DC 3.5 mA.
Operating Temp. 0 to 50 (32 to 122 ). ℃ ℃℉ ℉
Operating Humidity Less than 80% RH.