Waterproof, low power consumption, replaceable electrode, automatic temperature compensation and automatic switch-off feature after 10 minutes of inactivity to save battery power. 

Features:

• Measuring Range: 0.10-14.00pH
• Resolution: 0.10pH
• Accuracy: ±0.10 pH
• Operating Temperature: 5-50°C (ATC)
• Calibration: 2 points
• Power Supply: DC 4 x 1.5V (button battery)