WiFi 7-in-1 Chlorine Meter: Professional water quality tester for measuring pH, salinity, ORP, chlorine, EC, TDS and temperature of swimming pools. The smart residual chlorine meter can perform 7 measurements at the same time, saving time and effort. Ideal for swimming pools, spas, hot tubs, fish tanks, aquaculture and more. Zigbee wireless long-distance data transmission. Multifunctional PH meter with smart gateway connects to Zigbee WiFi, allowing You can save, manage and share your test data on Tuya or Smart Life APP, which is a good helper for your swimming pool management. The device must cooperate with the gateway to use USB solar power supply: the water quality PH meter supports solar charging and USB charging modes, no need to worry about running out of power, no need to open the device to replace the battery, lower power consumption, etc. waterproof. The floating waterproof chlorine meter PH meter can be placed directly in the pool to float, the purpose is to let you know the change of water quality at the first time, IP67 waterproof level, can prevent water penetration, suitable for short-term immersion in the pool. Water quality alarm In the intelligent scene, the highest or lowest value of the measurement can be set according to the demand. If the detection result exceeds the range, it can be prompted on the APP, allowing you to disinfect the pool at the best time. Comment: The pH of the swimming pool should be between 6.5-8 and the ORP should be between 487-840. The free chlorine value will be displayed normally. If these two values are not in this range, it will not display properly. If the pH value is lower than 6.5, it means that the water quality is acidic, and it is necessary to use disinfectant water to disinfect impurities. If the ORP value is above 850, it means that there is too much disinfectant, and water needs to be added or changed for neutralization. Kind tips *The electrode cover must be removed before use, and the value cannot be tested if it is not removed *Be sure to tighten the cover before putting it in water. (with capper) *If the cap is not tightened tightly, it may cause water to enter.