Features 1、【pH Meter with BT】Powered by the mobile app, professional measurement of pH/TDS/EC/CF/Temp (℃/℉), suitable for home drinking water, hydroponics, laboratory, aquarium and more. 2、【Cloud Based Data Management System】Precision real-time BlT data transmission, the measurement value is clear, and it allows you to save, manage, and share your test data easily, and you don/u0027t have to worry about data loss. 3、【Automatic Calibration pH Tester】 With highly sensitive pointed end, you can get a full measurement range of 0-14pH, 0.01 pH resolution. The pH 3-point calibration method can be used, and you need to provide your own calibration powder (pH 4.00, pH 6.86, pH 9.18) for calibration to ensure the accuracy of your measurements. 4、【Comprehensive Information Display】 Simply immerse the pH meter electrode in the solution to be tested, readings are quickly displayed on a large LCD display. Through a mobile phone application, you also have a multi-parameter display at the same time. 5、【Wide Applications】This meter can measure pH, TDS, EC, and Temp in fresh water situations, such as saltwater pools, spas and aquariums. It can also be used to measure drinking water, RO System, spa, soap mixtures, food, wine, beer or any other liquids. Specification The multi-functional 5-in-1 tester can easily measure multiple parameters, it can measure pH/TDS/EC/CF/Temperature. It is suitable for drinking water, aquariums, swimming pools, and seawater, etc. Features: 【pH Meter with BT】Powered by the mobile app, professional measurement of pH/TDS/EC/CF/Temp (℃/℉), suitable for home drinking water, hydroponics, laboratory, aquarium and more. 【Cloud Based Data Management System】Precision real-time BlT data transmission, the measurement value is clear, and it allows you to save, manage, and share your test data easily, and you don't have to worry about data loss. 【Automatic Calibration pH Tester】 With highly sensitive pointed end, you can get a full measurement range of 0-14pH, 0.01 pH resolution. The pH 3-point calibration method can be used, and you need to provide your own calibration powder (pH 4.00, pH 6.86, pH 9.18) for calibration to ensure the accuracy of your measurements. 【Comprehensive Information Display】 Simply immerse the pH meter electrode in the solution to be tested, readings are quickly displayed on a large LCD display. Through a mobile phone application, you also have a multi-parameter display at the same time. 【Wide Applications】This meter can measure pH, TDS, EC, and Temp in fresh water situations, such as saltwater pools, spas and aquariums. It can also be used to measure drinking water, RO System, spa, soap mixtures, food, wine, beer or any other liquids. Specifications: Model: BT-811 Material: ABS Range: pH: 0.00~14.00pH TDS: 0-19900ppm, 0-199.0ppt EC: 0-19900us/cm, 0-199.0ms/cm CF: 0-1990.0CF Temp: 0℃-50℃ (32℉-122℉) Resolution: pH: 0.01pH TDS: 1ppm (＜1999ppm), 10ppm (＞1999ppm), 0.1ppt EC: 1us/cm (＜1999us/cm), 10us/cm (＞1999us/cm), 0.1ms/cm CF: 1CF Temp: 0.1℃ / 0.2℉ Accuracy: pH: ±0.05pH EC/TDS/CF: ±2% F.S Temp: ±1.0℃ Battery: 4 * 6V batteries (Not included) Temperature Compensation: 0℃-50℃ Operating Temperature: 0℃-50℃ Item Size: 220 * 45 * 45mm / 8.66 * 1.77 * 1.77in Item Weight: 119g / 4.19oz Package Weight: 212g / 7.47oz Package Size: 30.5 * 5.5 * 5.5cm / 12.01 * 2.16 * 2.16in Package List: 1 * pH Meter 1 * User Manual (English) Package List Package List: 1 * pH Meter 1 * User Manual (English)