MAIN FEATURES:

• 4.3 inch color screen with friendly Ul.
• Unique high-precision filter system makes the instrument more stable and accurate.
• Automatic blanking and measurement, direct reading of concentration.
• With built-in standard curve. Users can build curves according to different purposes.
• Support up to 9-point calibration (new curve creation). Support restoring factory calibration data.
• Can store 5000 sets of test data.
• Rechargable battery can last for 10 hours. Auto power-off setting.
• IP67 waterproof and dustproof.