3-in-1 Online Water Quality MonitorThis WiFi aquarium ph monitor can monitor the pH, salinity and temperature online 24/7, and the test data of the day, week and month can be viewed at any time in the APP, which is convenient for observing and adjusting the water quality. Additional FunctionsYewhick WiFi Salinity tester for Saltwater pool, Water quality monitor can be connected to a CO2 pump to control the pH of the water. After setting the required pH, the automatic control system will send a signal to the solenoid valve to adjust the amount of CO2 released to help stabilize the pH of the water and maintain the healthy growth of aquatic plants and algae. Remote MonitoringThis WiFi Salinity meter water quality monitoring system support APP to remotely monitor the water quality of the fish tank online, and real-time data transmission is convenient to control and predict water quality changes at any time so that effective measures can be taken in time to deal with it. Alarm FunctionThis WiFi Salt Tester water quality monitor can set the MAX and MIN values of pH and salinity according to your needs, for example: set the maximum pH value to 6.96, when the pH test exceeds 6.96, it will alarm and turn on the controller and send a signal to the solenoid valve to start releasing CO2 until the pH value is 6.96. Wide applicationSmart WiFi salinity ph online monitor is mainly used for salinity monitoring in saltwater pools, such as fish tanks, fish ponds, fish farms, saltwater aquariums, aquaculture and seawater desalination, also suitable for hydroponics, swimming pools and greenhouse vegetable orchard irrigation, etc.