Features 17in1 Chlorin Meter: Multifunctional water quality tester for measuring pH, salinity, ORP, chlorin, EC, Total Dissolved Solids, and temperature in swimming pools. Supports 7 simultaneous measurements to save time and labor. 2Mobilephone APP Control: Mobilephone APP control for remote data transmission, allowing you to store, manage and share your test data on APP, and with data export function, which is a useful tool for your pool management. Support viewing historical data month, week, day at whenever and wherever you want. 3Device Sharing: Equipped with multi-account management and multi-device management function. Support name customization and automatic temperature compensation function. Specification Multifunctional water quality tester for measuring pH, salinity, ORP, chlorin, EC, Total Dissolved Solids, and temperature in swimming pools. Supports 7 simultaneous measurements for time and labor savings. Mobilephone APP control for long-distance data transmission, allowing you to save, manage and share your test data on APP, which is a useful tool for your pool management. Features: 7in1 Chlorin Meter: Multifunctional water quality tester for measuring pH, salinity, ORP, chlorin, EC, Total Dissolved Solids, and temperature in swimming pools. Supports 7 simultaneous measurements to save time and labor. Mobilephone APP Control: Mobilephone APP control for remote data transmission, allowing you to store, manage and share your test data on APP, and with data export function, which is a useful tool for your pool management. Support viewing historical data month, week, day at whenever and wherever you want. Device Sharing: Equipped with multi-account management and multi-device management function. Support name customization and automatic temperature compensation function. Alarm Function: The highest or lowest measurement threshold can be set according to your needs, APP alerts you when the detection value exceeds the set value. 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. Waterproof Design: PH meter can be placed directly in the pool and floats on the water, so you know the water quality change first time. IP67 waterproof design, suitable for short-term immersion in the pool. Wide Applications: Suitable for swimming pools, aquaculture, fish tanks, modern agriculture, wastewater treating, river water quality testing, etc. Notes: Due to the price limit of transportation conditions, the product is shipped without calibration fluid. Specifications: Name: 7in1 Chlorin Meter Material: ABS PH test ranges: 0.0-14.0ph Resolution: 0.1ph Accuracy: 0.1ph CL test ranges: 0.0-4.0mg/L Resolution: 0.1mg/L Accuracy: 0.1mg/L Salt test ranges: 0-999ppm, 1000-9990ppm Resolution: 1ppm, 10ppm Accuracy: 2% F.S. EC test ranges: 0-2000us/c m , 2000-9990uS/c m10.01- 19.99mS/c m Resolution: 1uS/c m 10uS/c m 0.01mS/C M Accuracy: 2% F.S. Total Dissolved Solids test ranges: 0-999ppm1000- 9990pp Resolution: 1ppm 10ppm Accuracy: 2% F.S. ORP test ranges: -999mv ~+999mv Resolution: 1mv Accuracy:15mv Temperature test ranges: 0.0-50.0 32.0-122.0 Resolution: 0.1/0.1 Accuracy: 0.5 Power supplies: USB, Solar Powered Item size: 210 * 165 * 165mm / 8.27 * 6.50 * 6.50in Package size: 220 * 170 * 170mm / 8.66 * 6.69 * 6.69in Package weight: 900g / 1.98lb Packing List: 1 * 7in1 Chlorin Meter Package List 1 * 7in1 Chlorin Meter