1.High precision probe: adopt a very accurate probe, which is corrosion resistant, has a fast response, stable data measurement and long service life. 2.WiFi connection: the tester can connect to the mobile phone via wifi, transfer data stably, you can display the current data and historical data on the phone, very comfortable. 3.Real-time transmission: data can be transferred in real time, daily, weekly and monthly data can be displayed, the water quality can be easily recorded. 4.App alarm setting: the app can trigger an alarm if the data is unusually high or low, easy to set up via Tuya, create an intelligent scene and set the security range, selecting the alarm method outside the security area is fine. 5.Wide application: the tester is suitable for water sources, earthless cultures, aquariums, hydroculture, laboratories, spas, environmental water, swimming pools, water purification systems, etc. Specifications: Item type: water quality meter Material: ABS Temperature compensation: 0–50 degrees Celsius. Operating temperature: 0–50 degrees Celsius. Range: PH: 0,00-14,00 pH EC: 0-19000us/cm, 0-199,0 ms/cm TDS: O-1990ppm, 0-199.0ppt Salt: 0-199,9ppt, 0%-20%. SG: 0.990-1.400 Temperature: 0–50 degrees Celsius. Resolution: PH: 0,01PH EC: 1us/(1000us/cm), 0,1ms/cm TDS: 1 ppm (1000 ppm), 0.1 ppt. Salt: 1 ppm (1000 ppm), 0.1 ppt, 0.01%. SG: 0,001 Temperature: 0.1 °C (0.2 °F) Accuracy: PH: ±0,03 pH. EC, TDS, salt: ±2%F.S. Temperature: ±1.0 °C. Delivery content: 1 x water quality meter. 2 x probe 3 x installation accessories. 1 x adapter.