7-in-1 pH Meter - This chlorine tester can measure the pH, TDS (ppm), EC (conductivity), CL (chlorine), ORP, SALT, and Temp of swimming pool water more accurately, quickly, and stably. Our chlorine meter needs to be connected to the Tuya App through 2.4GHZ WiFi and paired with a smart gateway Hub to be used. Solar Charging & USB Charging - Our floating design waterproof chlorine meter with a 45-milliwatt solar panel at the top, which can automatically charge and is perfect for outdoor swimming pools. In addition, the pool salt tester can last for 90 days in standby mode when fully charged, allowing you to continuously enjoy water quality monitoring without frequent charging. There is also a USB charging port designed for pool chlorine tester to facilitate the use of a charging cable for charging. Real-time Data Transmission - This pH water tester has a data export function and can choose to export Excel daily, weekly, or monthly on the APP interface. Accurate real-time data transmission and clear measurement values allow you to easily save, manage, and share test data without worrying about data loss. Alarm Function & Support Multiple Devices - This pool salt tester can customize parameter settings, Once the test results exceed the set range, the number will be displayed in red and an alarm message will pop up through the APP, allowing you to keep an eye on the water quality condition. Also, the device supports multiple device connections, shares device management with family, and achieves intelligent grouping control, making your water quality monitoring more convenient and intelligent. Multiple Calibration Solutions & ATC - The RCYAGO pH tester is equipped with various calibration solutions, including pH 4.00, pH 7.00, pH 10.01 calibration solution, EC 1413 uS/cm, ORP 222mV calibration solution, and it has automatic temperature compensation function. After using the calibration solution for calibration, the water tester will automatically recognize the calibration solution and provide accurate readings in real-time.