Features 1、IP65 waterproof, protect the instrument in all directions, no need to worry about water ingress into components. 2、It is easy to use, with a large high‑definition LCD backlight screen, which can be measured at night. 3、According to the ergonomic design, the product is more convenient to use, and it is convenient for people to hold and measure. 4、Sturdy and durable, made of high‑quality ABS material, long service life, not easy to damage. 5、Five‑in‑one multifunctional water quality detector, which can detect PH, TDS, EC, SALT, TEMP. Specification Item Type: Water Quality Detector Material: ABS Product Function: PH, EC, TDS, SALT, TEMP TDS Measurement Range: 0-10000ppm TDS Accuracy: 1ppm EC Measurement Range: 0-10000μS/cm EC Accuracy: 1μS/cm PH Measurement Range: 0.00-14.00pH PH Accuracy: 0.01pH Sea Water Salinity Measurement Range: 10.1-200.0ppt. Sea Water Salinity Accuracy: 0.01-5.00% (±0.1%), 5.1-25.00% (±1%) Screen Size: Approx. 33x24mm / 1.3x0.9in Battery: 3x LR44 Button Battery (Battery Not Included) Package List 1 x 5 in 1 Multi-Function Detector Pen(Battery Not Included) 3 x Reagent Powder 1 x Manual