Features 1、Anti‑rust and anti‑corrosion titanium alloy probe makes the measured value more accurate and reliable. 2、Water quality testing pen has double stainless steel clips, making the connection more stable. 3、The high‑definition LED screen automatically changes colors to make the result clearer. 4、Water quality analyzer is light in weight, easy to carry, and convenient to use. 5、Water quality detector can test the water quality of drinking water, swimming pools and other water systems. Specification Item Type: Water Quality Analyzer Material: ABS Color: Yellow Accuracy: ± 2% Range: 0-9999ppm (0-9999us/cm) Resolution: 1ppm Battery: 2 x LR44 button batteries (battery not included) Package List 1 x Portable Water Quality Analyzer (Battery Not Included) 1 x Manual