Shows the TDS value for a single water line. High efficiency and precision thanks to advanced microprocessor technology. Auto-Off function saves battery life: the device automatically powers off after 10 minutes of inactivity. Wide measurement range 0–9990 ppm with detailed resolution: - 0–999 ppm: 1 ppm steps - 1000–9990 ppm: 10 ppm steps Displayed with a blinking x10 indicator for the higher range. Factory calibrated: supplied with a 342 ppm NaCl calibration solution. Calibration can be performed with a small screwdriver. Equipped with Quick-Connect T connections: 1/4 inch standard, with options available in 3/8 inch or 1/2 inch. Applications and use scenarios - Home water quality checks to monitor drinking water or appliance input quality. - Hydroponics or small-scale farming to maintain appropriate nutrient water conditions. - Maintenance and testing of filtration or purification systems to verify performance and detect changes in water quality.