Features:  6 in 1: Multifunctional water quality tester, real-time monitoring of PH, total dissolved solids, EC, SG, salinity, water temperature, making your use safer.  Reliable Quality: High-accuracy probes are used, corrosion-resistant, long service lifespan, quick response, and more stable data. Support pH calibration.  APP Control: Support to connect to Tuya APP via WiFi, you can view current or historical data directly on the phone, alarm for abnormal data, etc.  Data Upload: The detector can upload data in real time. You can view daily, weekly, and monthly data to easily grasp the water quality.  Wide Application: Multi-parameter intelligent water quality detector, strong practicability, very suitable for aquarium, aquaculture, swimming pool, drinking water, laboratory, etc.    Specifications:  Color: Green  Material: ABS  Plug: E U / U S(optional)  Input Voltage: 220 V / 110 V(optional)  Range: EC: 0-19000us/c m, 0-199.0ms/c m             PH: 0.00-14.00pH             TD S: 0-19990ppm, 0-199.0ppt             SALT: 0-199.9ppt, 0%-20%             S.G: 0.990-1.400             Temp: 0℃-50℃ (32℉-122℉)  Resolution: PH: 0.01pH                    EC: 1us/c m (<1000us/c m), 10us/c m (>1000us/c m), 0.1ms/c m                    TD S: 1ppm(<1000ppm), 10ppm (>1000ppm), 0.1ppt                    SALT: 1ppm(1000ppm), 10pрm(>1000pрm), 0.1ppt, 0.01%                    S.G: 0.001                    Temp: 0.1℃(0.2℉)  Accuracу: pH: +0.03рH                  EC/TD S/SALT: ±2%F.S                  Temp: ±1.0℃  Temperature Compensation: 0°C-50°C  Operating Temperature: 0℃-50°C  Item Size: 130 * 77mm/ 5.1 * 3.0in  Package Size: 290 * 240 * 55mm/ 11.4 * 9.4 * 2.2in  Package Weight: 820g/ 28.9oz    Packing List:  1 * Water Quality Tester  1 * Power Cable  1 * Bracket  1 * Manual