Circuit :Custom one-chip of microprocessor LSI circuit. Operating Temperature: 0 °C to 50 °C (32 °F to 122 °F)
Display: *13 mm(0.5"). Super large LCD display: with. contrast adjustment for best viewing angle. *Dual function meter's display
Measurement :& RangeDissolved Oxygen 0 to 20.0 mg/L Power Supply 006P DC 9V battery (Heavy duty type). Oxygen in Air 0 to 100.0 % Power Current Approx. DC 6.6 mA. Temperature, °C 0 - 50 °C Weight 335 g/0.74 LB Measurement & Range Temperature, °F
Resolution:Dissolved Oxygen 0.1mg/L Oxygen in Air 0.1% O ² Temperature 0.1 °C.