[Bluetooth 6-in-1 Chlorine Meter] Professionally measure the pH, ORP, chlorine, EC, TDS and temperature of swimming pool water quality. 1 device measures and gets 6 measurements at the same time, saving time and effort.[Cloud-based data management system] Accurate real-time Bluetooth data transmission with clear measurement values. Let you save, manage and share your test data on mobile APP, a good helper for managing your pool[Waterproof PH meter] PH meter can be placed directly in the pool to float, the is to enable you to know the change of water quality at the first time, IP67 waterproof rating, can prevent water penetration, suitable for short time immersion in the pool[Set Alarm] According to the demand you can set the highest or lowest value of PH, ORP, EC, test results out of range can be prompted on the APP, allowing you to disinfect the pool at the best time[High precision pool water quality tester] The high precision algorithm chip and electrode of our digital water quality tester accurate and fast response. Cell phone APP control backlight display to meet the needs of different people.PH Range:0.1-14.0Resolution:0.1phAccuracy:0.1phTemperature Range:0.1-80.0 31.2-176Resolution:0.1/0.1Accuracy:0.5EC Range:0-1999us/cm , 10.01- 20.0mS/cm , 2000-10000uS/cmResolution:1uS/cm 10uS/cm 0.01mS/CMAccuracy:2% F.S.TDS Range:0-999ppm,1000- 9990pptResolution:1ppm 10ppmAccuracy:2% F.S. Range:0.1-4.0mg/LResolution:0.1mg/LORP Range:999mvResolution:1mvAccuracy:15mvDisplay:LCD digital displayBacklight:APP ControlTemperature:Automatic Temperature Compensation 0-60Operation Environment:0.1-80; RH:Max 90%PH calibration:pH:6.86/4.00/9.18 or 7.00/4.00/10.01, All functions have been calibrated when the product is sent out, please use it directlyColour:BlackMaterial:plasticPackage Contents:1 * Handheld RefractometerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.