Large and clear LCD display for easy reading and accurate measurements. 2-in-1 design allows simultaneous measurement of pH and temperature with high precision. Advanced 2-point automatic temperature calibration ensures reliable results by compensating for temperature variations between 0–80°C. Waterproof sensor probe for durability and easy replacement. Energy-saving function automatically powers off the device after 4 minutes of inactivity. Suitable for use in water sources, aquariums, hydroponics, spas, swimming pools, and other water systems. Specifications: Condition: Model: TPH01608 Measuring Range: - pH: 0.00–14.00 - Temperature: 0.1–60°C Resolution: - pH: 0.01 - Temperature: 0.1 Accuracy: - pH: ±0.01 - Temperature: ±0.5°C Automatic Temperature Compensation: 0–80°C Operating Temperature: 0–60°C Power Supply: 3 x 1.5V LR44 button cell (not included) Product Size: Approx. 183 x 37 x 37mm (7.2 x 1.5 x 1.5 inches) Package Weight: Approx. 231g Package Included: 1 x pH Meter Operation Steps: 1. Remove the protective sleeve. 2. Rinse the electrode with distilled water and gently blot dry. 3. Press the "ON/OFF" button to turn on the meter. 4. Immerse the electrode into the test solution. 5. Gently stir the meter and wait for the reading to stabilize before recording the value. 6. Press the "ON/OFF" button to turn off the device. Calibration Procedure: 1. Prepare standard pH buffer solutions (pH 6.86). 2. Fill two clean beakers—one for calibration and one with distilled water for rinsing. 3. Turn on the meter. 4. Immerse the electrode in the buffer solution. 5. Press and hold the "CAL" button for approximately 5 seconds until the display stabilizes at the known buffer value. 6. Calibration is complete. Package List: 1 x pH Meter