Features: - Quality Material: Made of quality ABS material, more durable. - Backlight Display: Easy to read and does not affect the use in the dark. - High Precision: Accurate to +/-0.1pH, more precise. - Easy Operation: More Convenient.? - Replaceable Electrode: High cost performance. - Wide Application: Suitable for the measuring of drinking water, hydroponics, aquarium, swimming pool, laboratory, etc. Specifications: Material: ABS Color: White Power Supply: DC 9V (Not Included) Measurement Range: 0.00-14.00pH Resolution: 0.01pH Accuracy: +/-0.1pH Temperature Compensation: 0-50 celsius (32-122 Fahrenheit ) Operating Environment: Temperature: 0-50 celsius (32-122 Fahrenheit ) Relative Humidity: less than 85% Calibration Mode: Manual single-point calibration Item Size: Approx. 15*6.5*2.5cm / 5.91*2.56*0.98in Item Weight: Approx. 125g / 4.41oz Package Size: Approx. 21*10.5*5cm / 8.27*4.13*1.97in Package Weight: Approx. 255g / 8.99oz Note: Please read the Users Manual before use. Packing List: 1 * Digital Tester 1 * Screwdriver 1 * Sensor Interface Silicone Dust Cover 1 * Probe Line 1 * Users Manual(English)