Feature: 1. 6-in-1 Meter Bluetooth Compatibility: Driven by mobile applications, it can professionally measure pH, ORP, chlorine, EC, TDS, and temperature. Suitable for domestic drinking water, hydroponics, laboratories, and aquariums. 2. Cloud Data Management System: Enables accurate real-time Bluetooth data transmission with clear measurement values. Allows users to save, manage, and share test data easily while preventing data loss. 3. Automatic Calibration of pH Tester: Utilizes a high-sensitivity glass probe. Features a five-point calibration method for pH, compared to standard three-point calibration. Includes calibration powders (pH 4.00, pH 6.86, pH 9.18, pH 7.00, pH 0.01) for easy and accurate calibration. 4. Comprehensive Information Display: Simply immerse the pH meter electrode into the solution to obtain quick readings displayed on the app. Multiple parameters are shown simultaneously, with mobile app-controlled backlight display. 5. High Precision Water Quality Tester: Equipped with a high-precision algorithm chip and digital electrode for accurate and fast response. Green backlight LCD design ensures readability under various lighting conditions. Specification: pH Range: 0.1–14.0 Resolution: 0.1 pH Accuracy: ±0.1 pH Temperature Range: 0.1°C to 80.0°C (31.2°F to 176°F) Resolution: 0.1°C / 0.1°F Accuracy: ±0.5°C EC Range: 0–1999 µS/cm, 10.01–20.0 mS/cm, 2000–10000 µS/cm Resolution: 1 µS/cm, 10 µS/cm, 0.01 mS/cm Accuracy: ±2% F.S. TDS Range: 0–999 ppm, 1000–9990 ppt Resolution: 1 ppm, 10 ppm Accuracy: ±2% F.S. Chlorine Range: 0.1–4.0 mg/L Resolution: 0.1 mg/L ORP Range: ±999 mV Resolution: 1 mV Accuracy: ±15 mV Battery: 3 x AAA (not included) Display: LCD digital display Backlight: App-controlled Temperature Compensation: Automatic