Feature: 1. 6-in-1 Meter Bluetooth Compatibility: Driven by mobile applications, this device professionally measures 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 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 enhanced accuracy, compared to standard three-point calibration. Includes calibration powder (pH 4.00, pH 6.86, pH 9.18, pH 7.00, pH 0.01) for precise adjustments. 4. Comprehensive Information Display: Simply immerse the electrode in the solution to obtain quick readings displayed on the app. Multiple parameters are shown simultaneously. Backlight display is controlled via the mobile app. 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 ppb 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