1. Professional measure device of water S.G/PH/EC/salinity/ORP/TDS/CF/temperature values. 2. Accurate real-time Wifi data transmission and clear measured values make it easy for you to save, manage and share test data without worrying about data loss. 3. Data automatically stored and saved. Data is received at all times, data curve graphs is provided analysis. You can receive excel file in your mobilephone or PC. 4. Multi-parameter display at the same time, LCD backlight display for clear reading, support night monitoring. 5. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools, and other water systems. Wall mounted design, easy to install and operate, to prevents water from entering the instrument. WiFi connect and data transfer, download Tuya Smart APP and enter your account. Real time monitoring water quality on mobilephones. PH measuring range:0.00-14.00PH 0.03PH ORP measuring range:-2000 to 2000mv 5mv EC measuring range:0-19000us/cm 2% F.S CF measuring range:0-1999.0CF 2% F.S TDS measuring range:0-19990ppm 2% F.S SALT measuring range:0-199.9ppt 2% F.S S.G measuring range:0.990-1.400 0.001 Temp measuring range:0-50 1.0 Working temp:0-50 Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC100-240V Colour:As Shown Material:ABS Size:152x80x26mm/6.0x3.1x1.0in Package Contents: 1 x Water Quality Tester Kit 1 x English manual 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.