This smart Bluetooth 5-in-1 portable water tester measures pH, EC, TDS, salinity and temperature simultaneously to meet fresh and saltwater testing demands. It supports professional 5-point calibration with matched calibration powders, delivering 0.01 high pH resolution, while built-in ATC auto temperature compensation avoids data deviation caused by liquid temperature changes.

Equipped with Bluetooth connection, it syncs real-time data to dedicated mobile APP for historical data storage, trend curve analysis and data export. The backlit LCD screen offers clear readings in dim light, with data hold function for convenient recording.

Compact pen-shaped design is easy to carry for field inspection. Widely applied to saltwater reef tanks, hydroponic planting, swimming pools, aquaculture and laboratory liquid analysis, this all-in-one tester is an affordable, reliable tool for daily long-term water quality monitoring.