YYW9909 Smart Aquarium PH Meter Accurate water quality testing for professional use in Fish Ponds, Aquariums, Hydroponics, and Mariculture. Measures pH 0.0014.00, TDS 019990 ppm, EC 019000 us/cm, SALT 0199.9 ppt, and S.G 0.9901.400 for precise results. Wireless monitoring and data management. Save, download, and share records of pH, TDS, EC, Salinity, S.G, and Temperature on your device. Use the dedicated app to view realtime data, set alarms for abnormal readings, and access historical data for analysis and comparison. User friendly design. Wallmountable with a suction cup for easy placement and hands operation. A precision probe provides corrosion resistance, long service life, and fast response, delivering stable and reliable data. alarm thresholds and recording frequency to suit your specific needs. Versatile applications. Suitable for Fish Tanks, Aquariums, Swimming Pools, Drinking Water sources, Laboratories, and Fish Ponds. Ideal for hobbyists and professionals who require accurate, ongoing water quality monitoring. Use scenario 1: Home aquarium maintenance. Monitor pH, TDS, EC, salinity, SG, and temperature to keep tank conditions and set alarms for drift or abnormal readings. Use scenario 2: Hydroponics or aquaculture systems. Track nutrient solution quality to maintain healthy plant and fish environments with remote monitoring and historical data analysis. Use scenario 3: Laboratory or drinking water assessment. Conduct precise water tests, log results, and share data with colleagues or facilities for verification and recordkeeping.