[ 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 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:1. This product needs to be used with ZigBee gateways that support the tuya solution.2. Due to the price limit of transportation conditions, the product is shipped without calibration fluid.Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, Colour:Photo ColorMaterial:PlasticPackage Contents:1x Water Tester setOnly 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.