This advanced water quality meter allows for simultaneous measurement of pH, TDS (ppm, ppt), EC (us/cm, ms/cm), salinity, and temperature, providing users with unparalleled convenience and time-saving advantages. Equipped with a LCD screen, this pH/TDS meter displays all measured values simultaneously, featuring a powerful data display function, with different data displayed in different colors for easy reading and recording. With three display modes( left hand, , and normal display), users can easily customize the device to suit their specific usage habits. This pH tester boasts a sensitive probe, high sensitive glass probe and 32-bit industrial-grade super chip design, ensuring improved measurement stability, accuracy, and a longer probe service life. Besides, the Automatic Temperature Compensation (ATC ) function guarantees precise measurements across a wide temperature range from 32 to 140F (0-60C), minimizing errors caused by temperature fluctuations in the liquid. The pH meter is incredibly easy to calibrate with its 3-point calibration and included double calibration powder (pH 4.00, pH 6.86, pH 9.18). Simply push the auto-calibration button, and the pH meter will automatically identify the calibration solutions, making the process quick and effortless. Equipped with 1000mA lithium-ion batteries, this water quality meter is designed to be rechargeable and boasts fast charging capabilities. With just 2 hours of charging time, it can provide up to 35 days of normal working time (once/day usage). Additionally, it features an auto power-off function that kicks in after 5 minutes of inactivity, helping to conserve battery life. Colour:black Material:plastic Package Contents: 1 set x ph meter 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.