Features: This water testing device features an illuminated LCD screen to measure total dissolved solids, conductivity, and temperature for thorough water quality assessment, suitable for both home and professional use. With wide detection capacity from 0 9999 ppm for total dissolved solids and accurate readings, this tool functions well for checking tap water. Designed for user convenience, it includes a data hold function, strength and mode selection buttons, additionally a bright display that's visible in low light conditions. Compact and portable at 5.91 inches long and 0.65 inches wide, it comes with a protective carrying case and cover for easy transport and storage. The package contains the water tester with metal sensors, measurement guide, battery compartment, protective case. Specifications: Substance: constructed of plastic, lightweight and permanent, suitable for daily use and portability. Parameters: Three-in- functional design, capable of simultaneously detecting the value, conductivity and (total dissolved solids) value of water, providing comprehensive water quality analysis. Dimensions: 16.5 mm × 29.5 mm × 150 mm Practicality: It is suitable for household drinking water testing, outdoor activities, laboratory research and other scenarios, helping users understand water quality conditions in real time and secure health and safety. Package Includes: Three-in- / water quality tester note: Before using the accessory, please check if it is compatible. Pay attention to the storage methods.