PAVEOS Digital Hydroponics Meter Tester 19.99 ms/cm Water Quality Electrical Conductivity Aquarium ATC 21%off Features： Compact and pocket-sized design Easy to use and provides a quick measurement High accuracy with ± 2% full scale accuracy Data hold function and built with Automatic Temperature Compensation (ATC) Auto power off Wide range of applications in water quality testing Pre-calibration and batteries included In this case Specifications： LCD display: 4 digits Measure Range: 0 to 19.99 ms / cm Resolution: 0.01 ms / cm Accuracy: ± 2% F.S. (Full scale) Automatic Temperature Compensation (ATC): 0 to 50 ° C (32 to 122 ° F) Operating Temperature: 0 to 50 ° C (32 to 122 ° F) Power Supply: 2pcs x CR1632 button cell batteries Pre-calibrated at factory Supplied with a screw driver for calibration if necessary Contain： 1 x Meter Tester 2 x CR1632 button cell batteries Househeld supplies for adult and children Design: Our digital multimeter adopts a close-to-life design, just to achieve a satisfying experience for you. Durability: This digital multimeter is made of sturdy and durable materials, which can maintain its functionality even after frequent use. Multipurpose: This digital multimeter can provide convenience for your daily life, whether it is for daily work or home leisure, you can also give it to your husband/wife/family, they will love it! Wide Selection: Discover an extensive range of household tools, from indoor to outdoor accessories, ensuring you find exactly what you need for your home . This digital multimeter will surely fulfill your needs! Service: If you encounter problems in the process of using digital multimeter, please feel free to contact us and we will solve them for you.