[WiFi 7-in-1 Chlorine Meter] Professional water quality tester for measuring pH, salinity, ORP, chlorine, EC, TDS, and temperature in swimming pools. Smart chlorine meter to get 7 measurements at the same time, saving time and effort.[Zigbee wireless long-distance data transmission] Multifunctional PH meter with smart gateway connects to Zigbee WiFi, allowing you to save, manage and share your test data on Tuya or Smart Life APP, which is a good helper for your pool management. Device must be used with a gateway[USB & Solar Powered Design] Two charging modes design, supports both solar and USB charging, no need to worry about running out of power, lower power consumption and longer durability. IP67 waterproof design[Water quality alarm] The highest or lowest value of measurement can be set according to demand in the smart scene, the detection result is out of range can be prompted on the APP, allowing you to disinfect the pool at the best time[Wide Applications] Suitable for swimming pools, aquaculture, fish tanks, modern agriculture, wastewater treating, river water quality testing, etc.7-in-1 PH Meter Specifications:PH Range:0.0-14.0Resolution:0.1phAccuracy:0.1ph Range:0.0-4.0mg/LResolution:0.1mg/LAccuracy:0.1mg/LSalt Range:0-999ppm, 1000-9990ppmResolution:1ppm, 10ppmAccuracy:2% F.S.EC Range:0-2000us/cm, 2000-9990uS/cm,10.01- 19.9mS/cm ,Resolution:1uS/cm 10uS/cm 0.01mS/CMAccuracy:2% F.S.TDS Range:0-999ppm,1000-9990ppResolution:1ppm 10ppmAccuracy:2% F.S.ORP Range:999mvResolution:1mvAccuracy:15mvTemperature Range:0.0-50.0 32.0-122.0Resolution:0.1/0.1Accuracy:0.5Battery:USB, Solar PoweredSupport APP:Tuya, Smart Life.Calibration:pH:6.86/4.00/9.18 or 7.00/4.00/10.01, EC:1413uS/cm, 12.88ms/cm, ORP:222mvAll functions have been calibrated when the product is sent out, e use it directlyType:B:With GatewayColour: BlueMaterial:PlasticPackage Contents:1 * Tester Solar1 * GatewayOnly 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.