Features: Quality Material: Made of high-quality ABS material for enhanced durability. Backlight Display: Easy-to-read screen that allows use in low-light conditions. High Precision: Accurate to 0.1pH with a resolution of 0.01pH for reliable measurements. Easy Operation: Simple to use with manual single-point calibration. Replaceable Electrode: Designed for cost-effective maintenance and long-term use. Wide Application: Suitable for measuring pH levels in drinking water, hydroponics, aquariums, swimming pools, and laboratories. Specifications: Power Supply: DC 9V (battery not included) Measurement Range: 0.00–14.00 pH Resolution: 0.01 pH Accuracy: ±0.1 pH Temperature Compensation: 0–50°C (32–122°F) Operating Environment: Temperature: 0–50°C (32–122°F) Relative Humidity: Less than 85% Calibration Mode: Manual single-point calibration Material: Plastic Color: As shown in image Package Contents: 1 x Digital pH Meter Note: The package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight variations between the color of the item in photos and the actual product. Measurement error tolerance is ±1–3 cm.