Features: 5 in 1 Water Quality Tester: Multifunctional design, real-time monitoring of PH, Total Dissolved Solids, S.G, SALT, and temperature(Specific testable content depends on product attribute options), high-accuracy and quick response, practical to use. Tuya APP Control: Support to connect to Tuya APP via WiFi, with stable data transmission, you can download APP to view current or historical data directly on the cellphone. The APP is compatible with FOR iOS and Android systems. Data Record: The application support check the real time data, and you can see the historical data recorded for 30 days , easy to compare and analyze, and easy to develop solutions. Data Output in Excel Sheet: Data in hour/dav/week/month is sent to the mailbox in the form of excel sheet. Download after sending email. Wide Applications: Multi-parameter intelligent water quality detector, strong practicability, very suitable for aquarium, hydroponics, aquaculture, swimming pool, drinking water, laboratory, etc. Specifications: Name: Water Quality Tester Measurement ranges: PH: 0.00-14.00pH Total Dissolved Solids: 0-19900ppm, 0-199.0ppt SALT: 0-199.0ppt, 0-20% S.G: 0.990-1.400 Temperature: 0-50 (32-122) Plug Type: EU Plug, it applies to Indonesia, Germany, France, Spain, Italy and so on voltage: AC220V colour: A-black+green Material: plastic Package Contents: 1 x Water Quality Tester 1 x Probe 1 x Adapter 1 x Installation Accessory Set Only 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.