Digital Water Tester pH TDS EC Temperature meter suhu air 4 in 1

Digital Water Tester PH - TDS - EC - Temperature Meter Suhu Quality Monitor Untuk Kolam Air Akuarium Minuman Mineral Minum Pool Drinking Water Aquarium 4 in 1 Measuring range: pH:0.00-14.00pH; TDS: 0-19990ppm; EC: 0-19990muS/cm Resolution: 0.01 pH; 1ppm; 1muS/cm; 0.1 degC; 0.1degF Accuracy: pH: +/-0.01 pH; TDS/EC: +/-2%; Temp: 0.5 degC Batteries: 3 * 1.5V LR44 button cell (not included) Temp.: 0.1-60.0 degC; 32.0-140.0 degF Calibration: pH: three points automatic calibration (6.86 amp; 4.00 amp; 9.18pH); TDS: 1413muS/cm; EC: 1413muS/cm Auto shut off: 5 Minutes SKU : 3131/1347356499532791808/55