Features: Quality Material: Made of high-quality ABS material for enhanced durability. Backlight Display: Easy-to-read screen that allows operation 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 picture Package Contents: 1 x Digital pH Meter Note: Light reflection and differences in display settings may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1–3 cm.