Dissolved Oxygen Range: 0.00–20.00 mg/L (0.0–200.0%)
Resolution & Accuracy: 0.01 mg/L; ±0.05 mg/L
Temperature Range: 0.0–100.0℃, Accuracy ±0.2℃
Compensation: Automatic temperature, salinity (0–40 g/L), and atmospheric pressure (700–1400 mbar)
Calibration: 1 or 2 points (100% saturated oxygen / 0% oxygen-free)
Power Supply: 1 × 1.5V AAA battery, easy replacement
Waterproof Rating: IP65, portable pen-type design
 

Measurement Range: 0-20 mg/L dissolved oxygen or 0-200% saturation
Accuracy: ±1% with resolution of 0.01 mg/L
Response Time: 10 seconds
Sensor Protection: IP68 waterproof sensor, IP67 instrument
Data Storage: Supports up to 50,000 measurements
Power Supply: USB charging & 4 x AA batteries
Display: 3.3-inch monochrome LCD with backlight