BENETECH GM769 Color Screen High Precision Pen-Type PH Meter Tester Product Introduction This product features high accuracy, stable performance, reliability, durability, and portability. It can be used to measure the pH value of solutions and the temperature of liquids. It is widely used in industries such as industrial manufacturing, power generation, agriculture, medicine, food processing, scientific research, and environmental protection. Product Feature 1. Measures the pH value of solutions 2. Measures solution temperature 3. LCD color screen display 4. Data hold function 5. Temperature unit switching: CelsiusFahrenheit 6. Power-off memory function 7. Solution temperature compensation 8. Automatic calibration 9. Battery level display and charging function 10. Automatic shutdown 11. Red backlight alarm (when pH is less than 3.5 or greater than 11.5) 12. Automatic detection of measurement status Product Parameter 1. pH measurement range: 0.00-14.00 2. pH resolution: 0.01 3. pH measurement error: +-0.05 4. Temperature range: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) 5. Temperature resolution: 0.1 degrees Celsius 6. Temperature error: +-1.0 degrees Celsius 7. Power supply: 3.7V 600mAh 2.22Wh lithium battery (built-in) 8. Display screen: LCD liquid crystal display 9. Operating temperature: 0 to 60 degrees Celsius 10. Operating humidity: Less than or equal to 85%RH 11. Product specifications: Diameter 43 x 190mm 12. Weight: Approximately 115.4g