Feature 1WATER QUALITY MONITORING: Intelligent pool cleaning lonizer can monitor the PH value, ORP value and salt level of swimming pool water in real time to ensure clean and healthy swimming water. 2SOLAR POWER SUPPLY: Powered by solar battery, no need for power supply and battery replacement, eco friendly and power saving. 3FLOATING DESIGN: The special floating design allows the instrument to float on the surface of the water, making it easy to monitor water quality at various locations. 4SIMPLE OPERATION: No need for complex settings, you can view the water quality data at any time through the cell phone APP, simple and convenient. 5PRACTICAL FUNCTIONS: In addition to monitoring the PH ORP salt of water quality, it can also detect the chlorine concentration.Item Type: Pool Cleaning IonizerMaterial: ABSWeight: 835 - 880 g / 29.5 - 31 oz(approx.)Product Size: Approx. 21x16.5cm / 8.3x6.5inMeasurement RangePH: 0.0-14.0 PHCL: 0.0-4.0 mg/LORP: -999-and999mVSALT: 0-999ppm; 1000-9990 ppmEC: 0-2000S/cm; 2000-9990S/cm; 10.01-19.99mS/cmTDS: 0-999ppm; 1000-9990 ppmTemperature: 0.0-50.0 Degrees Celsius; 32.0-122.0 Degrees FahrenheitThe phone exits the APP and automatically enters the standby mode, open the APP, the device works normally for measurement.Charging Mode: Solar Charging (Without Power Storage Function) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x PoolCleaningIonizer1 x Instruction Manual3 xCalibration Solution1 xAccessoryNoteMust be paired with a smart gateway to work.