3-in-1 Blue Electrical Conductivity Tester, TDS EC Measuring Pen for Water Quality Analysis with Backlight Function -

Ultra-sensitive sensor: Its high-precision probe effectively reduces electromagnetic interference in the water, ensuring stable and reliable measurements with a low margin of error. 4 built-in smart modes: Simply press the SHIFT key to switch between TDS, EC, temperature, and calibration modes—ideal for versatile and intuitive use. Wide range of professional applications: Perfect for monitoring the quality of drinking water, aquariums, fish ponds, swimming pools, agricultural irrigation systems, and scientific laboratories. Ergonomic and portable design: Compact (154 × 30 × 14 mm), lightweight (65 g), and easy to carry, store, or use on-site—convenient for everyday use and travel. High-readability LCD display: Large screen simultaneously displays TDS, electrical conductivity (EC), and temperature values, with a 0.1 resolution for clear and immediate readings. Certified accuracy: Measurement accuracy of ±0.1, extended measurement range of 0 to 9990 µS/cm, perfectly suited to the demanding needs of professionals and discerning individuals. Reliable power supply: Operates on a CR2032 button cell battery (120 mAh, not included), offering long-lasting power and simplified installation. Package contents: 1 x water quality tester, 1 x convenient storage bag, 1 x instruction manual in French (clearly illustrated and step-by-step). This product is sold by xiaosong on behalf of a third party. It is a compatible product. Thank you for your understanding and support.