FrideMok TDS Meter Digital Water Tester,Professional 3 in 1 TDS/EC/Temp Meter,0-9999ppm, Ideal Water Quality Tester for Drinking Water, Aquariums and More Accurate and Reliable : The TDS meter adopts premium quality titanium alloy probe and has ATC(Automatic Temperature Compensation) function to ensure reading accurately at various temperatures. Waterproof LCD Design : Unlike traditional screen, our water tester designed with advance LCD backlit display, which is easier and clearer to be read for you . 3-in-1 Function: Our TDS meter can test TDSEC and temperature. Its measuring range of TDS is 0-9999 ppm,the EC range is 0-9999 us/cm and the temp range is 32.0-176F- 0.1-80.0C ,with accuracy:  2% . Easy to Use: Turn on the TDS meter and stir water gently, then a stable reading will automatically lock on LCD in seconds .The TDS meter will be switched off automatically if without operation within 9 minutes,saving battery power . Compact Design : Mini design and easy to carry .You can test water anywhere to get the purest drinking water ,Keeping you away from pollution and have healthy. We provide 1 year free warranty ,if you have any questions ,please feel free to contact us .