Smart Bluetooth TDS/EC/pH/TEMP Meter Product name: Smart Bluetooth TDS/EC PH/TEMP Tester Powered by YINMIK Mobile App Measuring range pH: 0.01-14.00pH Accuracy: ±0.01pH Resolution: 0.01pH Measuring range EC: 0 – 19990 µs/cm Measuring range TDS: 0 – 9990 PPM Measuring range TEMP: 0.1 – 60.0 °C Power Supply: 3*1.5V(LR44) Temperature compensation: 0 ~60 Weight: 80g Dimension: 183mm*37mm*37mm Calibration: Automatic Calibration